Update README.md
Update README.md
Remove postgres job from TravisCI build
Update README.md
Update README.md
Update composer file

Change-Id: I581c8a8a71be8299fff28e55ab35387b29374005
Merge branch 'master' of github.com:SemanticMediaWiki/SemanticMediaWiki
Update composer.json
Fix global scope assumptions
Fix global scope assumptions
Update badge URLs
Update dependency status badge
Run coveralls AFTER the build succeeded