Compatibility fixes for OSX.  Closes scoptaz/nanorc#13
 * cython.nanorc: Remove non-greedy repetition operator, as it is not supported on OSX
 * fish.nanorc: Remove incompatible "magic" hint
 * pkgbuild.nanorc: Remove empty sub-expressions
Merge pull request #14 from staticfloat/master

Compatibility fixes for OSX.