Improve geordi cucumber: Only attempt @solo run when the specified files contain the @solo tag, skip @solo run if any filename is passed with a line number (e.g. features/example.feature:3)
Improve geordi deploy: Find stages by their prefix (e.g. s -> staging, m -> makandra), bundle if needed, check the selected stage exists
Improve geordi server: Takes port as argument (e.g. geordi ser 3001), option --public (-P) starts the server with -b 0.0.0.0 to make it accessible from other machines in the local network, e.g. with a test iPad
Improve geordi tests: If rake runs tests, skip other test runs (cucumber, rspec), as rake usually runs all employed tests
Rename geordi devserver to geordi server (the former is still supported)
Improved command descriptions and README
Fix geordi firefox --setup: Fail on missing version argument
