Maintenance -- clean up readme.txt and add url to GitHub. (#38)

* Removing readme.txt, as now we have README.md in place.

The only information missing from README.md is about FAQ.

* Adding FAQ information in README.md.

* Adding a .url to root to redict user to FreeRTOS github home page.

GitHub-FreeRTOS-Home.url

@@ -0,0 +1,8 @@
+[{000214A0-0000-0000-C000-000000000046}]
+Prop3=19,2
+[InternetShortcut]
+URL=https://github.com/FreeRTOS/FreeRTOS
+IconIndex=0
+IDList=
+HotKey=0
+

README.md

@@ -4,7 +4,7 @@ The easiest way to use FreeRTOS is to start with one of the pre-configured demo
 Additionally, for FreeRTOS kernel feature information refer to the [Developer Documentation](https://www.freertos.org/features.html), and [API Reference](https://www.freertos.org/a00106.html).
 
 ### Getting help
-If you have any questions or need assistance troubleshooting your FreeRTOS project, we have an active community that can help on the [FreeRTOS Community Support Forum](https://forums.freertos.org).
+If you have any questions or need assistance troubleshooting your FreeRTOS project, we have an active community that can help on the [FreeRTOS Community Support Forum](https://forums.freertos.org). Please also refer to [FAQ](http://www.freertos.org/FAQHelp.html) for frequently asked questions.
 
 ## Cloning this repository
 This repo uses [Git Submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) to bring in dependent components.

readme.txt

@@ -1,32 +0,0 @@
-Directories:
-
-+ FreeRTOS/source contains the FreeRTOS real time kernel source code.
-
-+ FreeRTOS/demo contains a pre-configured demo project for every official 
-  FreeRTOS port.
-  
-+ See http://www.freertos.org/a00017.html for full details of the FreeRTOS
-  directory structure and information on locating the files you require.
-
-  + FreeRTOS-Plus contains additional FreeRTOS components and third party 
-  complementary products.  THESE ARE LICENSED SEPARATELY FROM FreeRTOS although
-  all contain open source options.  See the license files in each respective
-  directory for information.
-  
-+ FreeRTOS-Plus/Demo contains pre-configured demo projects for the FreeRTOS-Plus 
-  components.  Most demo projects run in a Windows environment using the 
-  FreeRTOS windows simulator.  These are documented on the FreeRTOS web site 
-  http://www.FreeRTOS.org/plus
-
-Further readme files are contained in sub-directories as appropriate.
-  
-The easiest way to use FreeRTOS is to start with one of the pre-configured demo 
-application projects (found in the FreeRTOS/Demo directory).  That way you will
-have the correct FreeRTOS source files included, and the correct include paths
-configured.  Once a demo application is building and executing you can remove
-the demo application file, and start to add in your own application source
-files.
-
-See also -
-http://www.freertos.org/FreeRTOS-quick-start-guide.html
-http://www.freertos.org/FAQHelp.html