Hashie 2.0 fixes

Fix tests for hashie 2.0 hash indexing changes
Remove Gemfile.lock
Add /tmp to .gitignore
Require hashie ~> 2.0
Update requirements for packages
expand path to key for remote
Add link to Sprout
Merge remote-tracking branch 'origin/pr/19'

Conflicts:
	.gitignore
	soloist.gemspec
Merge remote-tracking branch 'origin/pr/29'