better spacing between groups on autolayout
trying FIXED_PORT for portConstraint on autolayout
trying FIXED_POS for portConstraint on autolayout
trying FIXED_SIZE for portConstraint on autolayout
trying FREE for portConstraint on autolayout
trying FIXED_RATIO for portConstraint on autolayout
Merge pull request #122 from automata/master

FIXED_RATIO for portConstraints on autolayout