#1054 Added placeholder in res folder so clean clones will create the directory.
Merge branch 'master' of https://github.com/MasDennis/Rajawali
Renamed README.md in res folder to .README.md to get eclipse to stop
freaking out.

Signed-off-by: Jared Woolston <jwoolston@tenkiv.com>
Fixes #1055. Adds a new method to SquareTerrain to retrieve the height matrix.
place null testing before first use
Merge pull request #1067 from bigsfr/master

place null testing before first use
Merge pull request #3 from MasDennis/master

Merge branch 'master' of https://github.com/MasDennis/Rajawali