Merge pull request #12 from dlfivefifty/master

Imported Base.rand to fix rand(Haar)
Remove ancient dependency information
Modernize tests
Conditionalize GSL dependency
Add Travis CI testing
Add modern badges to README
Rename has -> haskey for Julia 0.3
Clean up code
Add zero and one methods for FormalPowerSeries
Put permutations_in_Sn in _HAVE_GSL block (requires GSL.permutation_calloc)
Make Haar symbolic tests dependent on GSL presence