Update johnny_deps
Accept an optional argument for deps file
Check for the sh defined in the env
Avoid switching directories
Merge pull request #8 from foca/patch-1

Avoid switching directories
Merge pull request #6 from elcuervo/define_godeps_file_path

Define godeps file path
GIT_DIR is really not a great idea
Quote all strings to allow for whitespace.

This is not strictly necessary for all of the strings, but it is generally a
good practice in Bash. In particular, $GOPATH could contain spaces.
Merge pull request #5 from VividCortex/issues/4

Only install packages when everything's at the specified version
Consistent use of godeps file
Gluing the new features together
Merge branch 'quote-strings' of github.com:juliusv/johnny-deps

Conflicts:
	bin/johnny_deps
pointless checking
exit from main body not function
use PE instead of... that
also fail when vars are unset (eg. $GOPATH)
we already have set -e
Merge pull request #13 from git2samus/master

receive my h̶a̶t̶e̶ love!
Ignore empty lines
Merge pull request #15 from VividCortex/issues/14

Ignore empty lines