Add drive inertia and offset friction to modelation. Improve friction model selection.
Update Travis badge link to reflect package name with new uppercase initials
Merge pull request #1 from cdsousa/driveparams

Add Coulomb friction offset and drive chain inertia dynamic parameters to robot model
Add Julia language code generation
Fix import error
Merge pull request #2 from neka-nat/master

Fix import error
Add support to SymPy 0.7.4, while maintaining 0.7.3 compability
Merge pull request #3 from cdsousa/sympy0.7.4

Add support to SymPy 0.7.4, while maintaining 0.7.3 compability
Merge branch 'master' into bin