Auto-gen list of D compiler versions: Improvements

[Nick Sabalausky via Digitalmars-d-announce]

The automatically-updated list of D compiler versions available on 
Travis-CI (and which front-end/back-end version they each use) has had a 
few small improvements lately:

http://semitwist.com/travis-d-compilers

- Now includes beta versions available for DMD (starting at v2.072.0) 
and LDC (starting at v1.1.0). GDC betas will automatically be supported 
if/when the "gdc-beta" label becomes available on travis.

- Fixed: Incorrectly parses LLVM version for LDC v1.0.0 and up

- Added links going directly to DMD/LDC/GDC sections. (No longer have to 
scroll through DMD entries to find LDC/GDC.)

- On-hover row highlighting.

As before, the list is currently set to automatically update once daily 
(although I can adjust that if need be. I just don't want to put an 
undue burden on travis by checking too often.)