Merge pull request #31 from fperrad/buildroot

fix getColumns() for Buildroot
tree: d2f5ca0a0b3d786342516ff0238f9a8a6da09d91
  1. .gitignore
  2. example.c
  3. linenoise.c
  4. linenoise.h
  5. Makefile
  6. README.markdown