Added YouTube video for Bash tutorial (#55)

* added YouTube badge for Boltzmann tutorial

* added bash tutorial YouTube badge

* added profiling tutorial

Author: sfarrens

README.md

@@ -41,20 +41,24 @@ We always welcome new tutorial requests, just click [here](https://github.com/Co
     The objective of this tutorial is to provide a first look at Python for beginners. The level is aimed at individuals with little or no experience whatsoever with Python. Experienced users are unlikely to benefit from this tutorial.
   * [Tutorial 2: Intermediate and Advanced Topics](https://github.com/CosmoStat/Tutorials/tree/python#tutorial-2-intermediate-and-advanced-topics)
     The objective of this tutorial is to provide a more in-depth look at object-oriented and pythonic coding. The level is aimed at individuals with some experience with Python and good knowledge of basic object types. This tutorial will likely benefit all except the most advanced users.
+    
+2. **[Python Optimisation and Memory Management](https://github.com/CosmoStat/Tutorials/tree/profiling)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/profiling)  
+  *Authors:* [@sfarrens](https://github.com/sfarrens)  
+  This tutorial introduces some techniques for determinisitic and memory profiling of Python scripts, followed by some tips on how to implement some basic optimisation.
 
-2. **[C++](https://github.com/CosmoStat/Tutorials/tree/CPlusPlus)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/CPlusPlus) [![youtube](https://img.shields.io/badge/-youtube-red?logo=youtube&labelColor=grey)](https://www.youtube.com/watch?v=47Ldg6i2B8Y&list=PLquvp9RIoLGD5yDykupoCueNp2EHEjuZB)  
+3. **[C++](https://github.com/CosmoStat/Tutorials/tree/CPlusPlus)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/CPlusPlus) [![youtube](https://img.shields.io/badge/-youtube-red?logo=youtube&labelColor=grey)](https://www.youtube.com/watch?v=47Ldg6i2B8Y&list=PLquvp9RIoLGD5yDykupoCueNp2EHEjuZB)  
   *Authors:* [@kansal9](https://github.com/kansal9)  
   This tutorial aims to help newcomers learn C++ and solve their programming problems. It is assumed that readers are already familiar with C, or at least that they do not have any difficulty reading C code. In other words, those who have experience in C and peo·ple who desire to quickly understand the features of modern C++ in a short period of time are well suited to follow this tutorial.
 
-3. **[Sparsity](https://github.com/CosmoStat/Tutorials/tree/ada)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/ada) [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/ada)  
+4. **[Sparsity](https://github.com/CosmoStat/Tutorials/tree/ada)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/ada) [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/ada)  
   *Authors:* [@sfarrens](https://github.com/sfarrens)  
   This tutorial is comprised of a series of Jupyter notebooks that demonstrate how the tools implemented in sparsity work as well as showing the applicability of these tools to various simple problems.
 
-4. **[Low-Rank](https://github.com/CosmoStat/Tutorials/tree/low-rank)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/low-rank) [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/low-rank)  
+5. **[Low-Rank](https://github.com/CosmoStat/Tutorials/tree/low-rank)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/low-rank) [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/low-rank)  
   *Authors:* [@sfarrens](https://github.com/sfarrens)  
   The objective is to provide a beginner level introduction to the concept of low-rank approximation, in particular as a regularisation method for solving linear inverse problems.
 
-5. **[TensorFlow](https://github.com/CosmoStat/Tutorials/tree/tensorflow-tutorial)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/tensorflow-tutorial)  
+6. **[TensorFlow](https://github.com/CosmoStat/Tutorials/tree/tensorflow-tutorial)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/tensorflow-tutorial)  
    *Authors:* [@zaccharieramzi](https://github.com/zaccharieramzi), [@EiffL](https://github.com/EiffL)  
    * *First Steps with TensorFlow*: [![youtube](https://img.shields.io/badge/-youtube-red?logo=youtube&labelColor=grey)](https://www.youtube.com/watch?v=kawHQpxytLo) [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/CosmoStat/Tutorials/blob/tensorflow-tutorial/TensorFlowFirstSteps.ipynb)  
    A short introduction to the basic concepts underpinning TensorFlow, in particular automatic differentation.
@@ -79,7 +83,7 @@ We always welcome new tutorial requests, just click [here](https://github.com/Co
   *Authors:* [@EiffL](https://github.com/EiffL)   
   This tutorial demonstrates how to create a Docker container to distribute a complete Jupyter notebook environment.
 
-5. **[Bash and Scripting Tutorial for Researchers](https://github.com/CosmoStat/Tutorials/tree/bash_tutorial/README.md)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/bash_tutorial)  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/bash_tutorial?filepath=intro.ipynb)  
+5. **[Bash and Scripting Tutorial for Researchers](https://github.com/CosmoStat/Tutorials/tree/bash_tutorial/README.md)** | [![github](https://badgen.net/badge/icon/github?icon=github&label)](https://github.com/CosmoStat/Tutorials/tree/bash_tutorial) [![youtube](https://img.shields.io/badge/-youtube-red?logo=youtube&labelColor=grey)](https://www.youtube.com/watch?v=NU8dYd3RM-E&t=37s) [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/CosmoStat/Tutorials/bash_tutorial?filepath=intro.ipynb)  
 
     *Authors:* [@fadinammour](https://github.com/fadinammour), [@JulienNGirard](https://github.com/JulienNGirard)(screen segment)
     This tutorial gives the key concepts of bash and its scripts to help researchers manage and process their data with more ease.