Change Riemann solver function interface
Add documentation changes corresponding to new Riemann func interface

Also change empty Riemann solver function interfaces
Change test Riemann solvers to match new interface
fixed out3.f to print out num_dim, needed for reading into python
added 3d regression test
added setup and teardown to tests
changed .travis.yml to execute nosetests rather than make tests
To test new Riemann ordering

Merge branch 'fix_tests' into mandli-change-riemann-func-call-order

* fix_tests:
  changed .travis.yml to execute nosetests rather than make tests
  added setup and teardown to tests
  added 3d regression test
  fixed out3.f to print out num_dim, needed for reading into python
Removed rp*f and fixed Makefile to point to riemann repository in annulus example
Merged in changes from PR#54 where @donnaaboise added .m files
Merge branch 'master' into fix_tests

* master:
  acoustics_3d_heterogeneous : added Matlab files and ran example
  advection_2d_annulus: Added Matlab files and test example
  acoustics_2d_radial : added Matlab files and tested example
  acoustics_1d_heterogenous: added Matlab files
  acoustics_1d_example1 : Fixed line style
Merge branch 'fix_tests' into change-riemann-func-call-order-fix_tests
testing with Kyle's fixes.

* fix_tests:
  Removed rp*f and fixed Makefile to point to riemann repository in annulus example
  acoustics_3d_heterogeneous : added Matlab files and ran example
  advection_2d_annulus: Added Matlab files and test example
  acoustics_2d_radial : added Matlab files and tested example
  acoustics_1d_heterogenous: added Matlab files
  acoustics_1d_example1 : Fixed line style
Merge pull request #56 from rjleveque/fix_tests

Added 3d regression test and fixed other tests and travis file
Merge branch 'master' into change-riemann-func-call-order-fix_tests

* master:
Merge pull request #57 from rjleveque/change-riemann-func-call-order-fix_tests

Change riemann function interface - update
fix == errors in setrun
Merge pull request #58 from rjleveque/fix-setrun

fix == errors in setrun