Update README.md
Update README.md
Update README.md
Merge branch 'master' of https://github.com/JugglerShu/XVim

* 'master' of https://github.com/JugglerShu/XVim:
  Update README.md
  Update README.md
  Update README.md
Adding Rake to automate the build, install, and installation
Xcode Version Detection
Fix Typo
Removing Support for Xcode 4

  Only Xcode 5 or 6
Merge pull request #613 from lynxluna/features/rake

Adding Rake to automate the build, install, and uninstallation
Add an option to solve #598
Change the option name for #598. Added feature explanation.
Add Makefile

/usr/bin/make is installed with Xcode, so just type 'make'
to install the Release version of XVim.
Add cmap. Fix #565.
Merge pull request #614 from JessThrysoee/develop-makefile

Add Makefile