fixed permission issue in Readme instructions
Revert "fixed permission issue in Readme instructions"

This reverts commit 8fa0124c2f6226d3cf4d4b1ecd25e97627d3b4a5.
added F5 shorcut for switching buffers
Added custom number toggling
Revert "removed commented YCM reference"

This reverts commit 87566546dedc4bdf7fe5bf702e66ffc601bed30a.
added custom number system on <F3>
Merge branch 'master' into ycm