added travis-ci file
Merge pull request #3 from cystbear/travis

added travis-ci file
fixed wrong workspaceName:
did not handled `null` workspaceName, should use default workspaceName 'default'
fixed validation node path in "ensureValidPath" method:
allowed Umlauts
allowed "%" symbol
allowed "&" symbol
allowed ";" symbol
allowed ":" symbol
implemented "getNodesByIdentifier" method
implemented "getNodeByIdentifier" method
according Spec, returning workspace name after login
Jackalope-MongoDB supports AnonymousLogin