Fixed fetch typo x96 to x86

extensions/gdx-remote/libs/x86
Added x86 directories to .gitignore
Added functionality to rectangle

Calculating aspect ratio, calculating center point, centering the
rectangle to a point, fitting a rectangle in/outside another rectangle
while maintaining aspect ratio.
Revert "Added functionality to rectangle"

This reverts commit e83eb23f543040bafd7e78b700913672c2cf04fe.
Merge pull request #523 from JonECG/master

Fixing the fetch and gitignore