Create CONTRIBUTING.md

references #12
Update LICENSE.md
Merge pull request #13 from ridhoq/fix12

Create CONTRIBUTING.md
Added installation instructions for linux users
Merge pull request #22 from alexwforsythe/docs

Added installation instructions for linux users
Update README.md
Fixed readme
Merge pull request #25 from alexwforsythe/docs

Docs
Merge branch 'master' into fix4

Conflicts:
	README.md