Merge pull request #319 from dixyushi/update-downloadFile

Update downloadFile content

Author: GuentherJulian

documentation/Functions.md

@@ -449,13 +449,26 @@ Note:
 ***
 
 ### downloadFile <a name="downloadFile"></a>
+This function is used to download a file from an external URL.
 #### parameter 
-1. URL of the file to be downloaded.
-2. Name of file.
-3. (Optional) Downloads file to a given directory relative to workspace. Directory is created, if its not existing.
+This function consist of 3 parameters.
+1. First parameter:
+    - **Required**
+    - **Type**- String
+    - **Description**- URL of the file to be downloaded.
+2. Second Parameter:
+    - **Required**
+    - **Type**- String
+    - **Description**- Name of file
+3. Third parameter:
+    - **Optional**
+    - **Type**- String
+    - **Description**- The path where the file should be stored. It can be used if you want to load the file into a different folder and not into the current Workspace. If folder does not exists, it will be created.
 #### example 
 downloadFile("https://bit.ly/2BCkFa9", "file", "downloads")
 
+Note: The command for execution will be generated by Katacoda runner, so user will have to execute this command manually.
+
 ***
 
 ### buildNg <a name="buildNg"></a>