Rename README.txt to README.md
Revamp README to Markdown, test rendering in Github.
Better bullets...
Merge pull request #240 from alhirzel/convert-readme-to-markdown

Convert readme to markdown
Update CMake to reflect readme rename
Revert "Fix shfolder.dll not getting freed"

This reverts commit 4d2b18638a1b53f5e3c3533fb93b2d1b544af4e7.
Fix shfolder not getting freed
cgame: fix some warnings
Fix crash when attempting to translate a NULL string
Always allow pubkey file to be loaded.
Minor bug in Sys_LoadDll. The first check for libhandle will return and unless you're running developer 1 you'll never see the error message which caused the game not to load.
Remove status reporting from Sys_TryLibraryLoad.

Without this, the preceding commit will cause double reporting of errors if
developer=1.
Add v0.16.0 versions of shader, particle and trail files inside main/scripts.
Add v0.16.0 versions of config files inside main/models and main/sound.
Add v0.16.0 versions of skin files inside main/models.
Add entities definition file main/def/entities.def.
Add armour files inside main/armour.
Merge remote-tracking branch 'remotes/origin/master' into gameplay/master