changed symlink to only symlink files
change install script and README
Merge https://github.com/spacebark/homeshick
fix buug
Merge remote-tracking branch 'upstream/master'

Conflicts:
	README.md
	install.sh
	utils/fs.sh
Make symlinking directories safer and clean up code.
Make track link files such that their relative path to the home directory is preserved
Fix for issue #19 + tests (I think)
Merge remote-tracking branch 'fenekku/master'
Merge remote-tracking branch 'spacebark/master'

Conflicts:
	README.md
	test/run
	utils/fs.sh
--force means overwrite, not "yes" to everything
Generally speaking the --skip and --force flags should be thought over
Remove duplicate git config
Check if castle exists when symlinking
Simplify dir check when symlinking
Restructure linking/mkdir procdure
Only .homeshick and test/run need /usr/bin/env bash
And the -e flag only works for them since they are the
only ones being executed directly from the shell.
All the other files have #!/bin/bash solely for syntax detection
by editors
Move git config cmd so it runs inside the fixtures.
Otherwise Mr. Bar is going to be the maintainer of homeshick from now on :-)