Make naming of test examples more consistent
Add helper to generate random string to make testing easier
Add helper to make testing of environment variables easier
Add file expand wherever needed
Added tests for checking ~ paths
Moved file tests in file describe block
Step to mock home directory
Fixed bug in After
Added tests for mocking the home directory
Reuse existing functionality in aruba
Merge branch 'feature/expand_path' of github.com:dg-vrnetze/aruba into integration/expand_path

Conflicts:
	lib/aruba/cucumber.rb
	spec/aruba/api_spec.rb