use regular expressions rather than touching String.prototype
optimize code a little
add method to delete buffers
DRY up initMeshBuffers
Revert some of the changes.
Merge branch 'nickdesaulniers-microOpts'
Merge pull request #9 from nickdesaulniers/deleteMeshBuffers

add method to delete buffers
Merge branch 'dryInitMesh' of https://github.com/nickdesaulniers/webgl-obj-loader into nickdesaulniers-dryInitMesh
Fix naming miss-match.
Merge branch 'nickdesaulniers-dryInitMesh'

Conflicts:
	webgl-obj-loader.js