Updated README
Kaju: Added IsWriteableRecursive function
Kaju.IsWriteableRecursive: Better index variable names
UpdateChecker: Checks the write permission for every item related to the executable
Merge branch 'feature/Update_README' of https://github.com/ktekinay/Kaju into feature/Update_README

* 'feature/Update_README' of https://github.com/ktekinay/Kaju:
  Rename License.txt to LICENSE.txt