readme - clearer info on the two branches

also removed pre-release as this has now been released

Author: timabell

README.md

@@ -1,12 +1,21 @@
 [![Build status](https://ci.appveyor.com/api/projects/status/45x7s2101mpfjmhp/branch/master)](https://ci.appveyor.com/project/cosmo0/commandline/branch/master)
 
-Command Line Parser Library 2.0 pre-release
+Command Line Parser Library
 ===
 
 The Command Line Parser Library offers to CLR applications a clean and concise API for manipulating command line arguments and related tasks defining switches, options and verb commands.  
 It allows you to display an help screen with an high degree of customization and a simple way to report syntax errors to the end user. Everything that is boring and repetitive to be programmed stands up on library shoulders, letting developers concentrate on core logic.  
 __This library provides _hassle free_ command line parsing with a constantly updated API since 2005.__
 
+There are two versions available via nuget, the current 2.0 branch that tracks master, and a maintenance branch of 1.9 to provide bugfixes for anyone using the older api.
+
+  - 2.0
+    - nuget package: https://www.nuget.org/packages/CommandLineParser20
+    - branch: master
+  - 1.9
+    - nuget package: https://www.nuget.org/packages/CommandLineParser19
+    - branch: stable-1.9
+
 Project status and future
 ---
 This fork contains the latest pull requests from the original project (since the original developer seems to have vanished).  
@@ -21,7 +30,7 @@ Compatibility:
 
 Current Release:
 ---
-  - This is a __pre-release__, for documentation please read the appropriate [wiki section](https://github.com/cosmo0/commandline/wiki/Latest-Beta).
+  - For documentation please read the appropriate [wiki section](https://github.com/cosmo0/commandline/wiki/Latest-Beta).
 
 At a glance:
 ---