Make version agnostic

chapel.html.markdown

@@ -1141,11 +1141,13 @@ to see if more topics have been added or more tutorials created.
 Your input, questions, and discoveries are important to the developers!
 -----------------------------------------------------------------------
 
-The Chapel language is still in-development (version 1.16.0), so there are
+The Chapel language is still in active development, so there are
 occasional hiccups with performance and language features. The more information
 you give the Chapel development team about issues you encounter or features you
-would like to see, the better the language becomes. Feel free to email the team
-and other developers through the [sourceforge email lists](https://sourceforge.net/p/chapel/mailman).
+would like to see, the better the language becomes.
+There are several ways to interact with the developers:
++ [sourceforge email lists](https://sourceforge.net/p/chapel/mailman).
++ [Gitter chat](https://gitter.im/chapel-lang/chapel)
 
 If you're really interested in the development of the compiler or contributing
 to the project, [check out the master GitHub repository](https://github.com/chapel-lang/chapel).
@@ -1158,8 +1160,8 @@ Chapel can be built and installed on your average 'nix machine (and cygwin).
 [Download the latest release version](https://github.com/chapel-lang/chapel/releases/)
 and it's as easy as
 
- 1. `tar -xvf chapel-1.16.0.tar.gz`
- 2. `cd chapel-1.16.0`
+ 1. `tar -xvf chapel-<VERSION>.tar.gz`
+ 2. `cd chapel-<VERSION>`
  3. `source util/setchplenv.bash # or .sh or .csh or .fish`
  4. `make`
  5. `make check # optional`