changed name to OptimTraj.

Added Users guide and fixed a few minor errors in the documentation

Analytic gradients with Runge-Kutta now work

Published on Matlab File Exchange. Includes analytic gradients and er…

…ror analysis for direct collocation methods

Analytic gradients for direct collocation and wrapper for GPOPS imple…

…mented

Initial public release on GitHub. Three examples and Four methods hav…

…e been implemented, as well as basic input validation and error handling.

Basic functionality, four methods, three examples.