raise MissingCredentials exception in SimpleClient
add .travis.yml to enable Travis-CI builds
Merge pull request #1 from stefankoegl/bug-1017

raise MissingCredentials exception in SimpleClient
Merge pull request #2 from stefankoegl/new-api-features

New api features
Merge pull request #3 from stefankoegl/travis

Enable Travis-CI builds
accept "flattr" episode actions
fix exception msg