README updated -> #43 fixed

Author: kunzstef

README.md

@@ -1,15 +1,44 @@
 ![EEXCESS](http://eexcess.eu/wp-content/uploads/2013/04/eexcess_Logo_neu1.jpg "EEXCESS") 
 
+## Installation
+
+### End-users
+
+You can simply install this addon from the Google Add-On Store by either
+
+- navigating directly to it [https://chrome.google.com/webstore/detail/e-explorer/ldhpoddoeakgahcoammcpkbchphakcmh](https://chrome.google.com/webstore/detail/e-explorer/ldhpoddoeakgahcoammcpkbchphakcmh)
+- searching for "E-Explorer" in the store
+
+You will need to be logged in with your Google Account to do this. 
+
+The add-on installation is tied to your Google Account, so it works in all your documents (when you are logged in). 
+
+### Developers
+
+1. Open a Google Docs Document and login with your Google Account to install this add-on
+2. Open the script editor (Top Menu: Tools -> Script editor...)
+3. Create for each file in the repository a file in the script editor with the same name and content (File -> New -> ...)
+4. Save all created files and set the project's name.
+5. Go back to the Google Docs Document and refresh it
+6. Now the add-on should be available under your chosen project name
+
 ## How this addon works
 
-1. Go to: https://docs.google.com/document/d/1TEv1JwNXZDzLR0yh0M_-J2gI49ESNudzX49mrrP9Hqc/edit?usp=sharing 
-2. Login with your Google Account to be able to use this addon 
-3. Activate the plugin (Top Menu: Addons -> EEXCESS -> Start)
-4. Select a piece of text or use the search bar to search for recommendations. After a short while the recommendations will be displayed in the sidebar.
+1. Open a Google Docs Document and login with your Google Account to be able to use this add-on
+2. Activate the add-on (Top Menu: Add-ons -> E-Explorer -> Start)
+3. Select a piece of text or use the search bar to search for recommendations. After a short while the recommendations will be displayed in the sidebar.
+4. To submit multiple words as one keyword surround them with "
+
+## Troubleshooting
+In case the menu only shows "E-Explorer->Help" and "Start" is missing, do the following:
+
+- click on "Addons->Manage Add-ons" 
+- Select E-Explorer and "Activate for this document"
+- RELOAD the document in the browser
 
 ## Source Code
 
-The source code can be found ( and edited ) directly inside the browser. If you want to do this, you have to open the Script Editor ( Top Menu: Tools -> Script Editor ).
+The source code can be found (and edited) directly inside the browser. If you want to do this, you have to open the Script Editor (Top Menu: Tools -> Script Editor).
 
 ## Texts for Docs add-on deployment