Add browse command
Add mr browse command
Add warning for empty private token with link
Merge remote-tracking branch 'origin/feature-browse' into feature-private-token-warning
Merge remote-tracking branch 'homburg/feature-browse-merge-request'

Conflicts:
	gitlab.go
Fix imports
Simplify flag parsing
Update readme
Show opened merge requests bey default
Validate unlikely hosts
Remove debug code
Add lab browse stderr message
Browse in text browser if necessary
Merge pull request #7 from homburg/master

Add features