More informative README
Added cmd2 and pyparsing to the repository to reduce the number of external dependencies. Updated the user guide accordingly
Functions in facade now convert parameters to the correct types if they are input as strings
Wrote parts of text for tutorial in userguide
1. - Added more text to usergiode tutorial
2. - Fixed some problems with Godunov SPH
Fixed parsing problems in gandalf_interpreter
Merge branch 'master' of github.com:gandalfcode/gandalf
Added more information for examples
More tests for tutorial in userguide
Fixed some parts of 1st order Riemann solver, but temporarily disabled 2nd order Riemann solver to solve problems in the future.
Minor changes