Add service info in README
init: FIX guessRepoFromUrl not returning a promise
FIX invalid call to config.set
FIX always using config defaults in fromDiff
bitbucket: debug
bitbucket: more robust request api
bitbucket: message if issue tracking is supposedly disabled
bitbucket: use form-url-encoded request data
bitbucket: fix allIssues
Service-specific configuration options can be declared in service metas
Add 'conf' option in sample service