Create shocktube.py

Example script for the 3D Euler equations with dimensional splitting.
This example solves a 1D shocktube problem in a 3D domain.
Create Sedov.py

This is an example script for the 3D Euler equations with dimensional splitting.
A fully 3D Sedov blast problem is solved.
hdf5 reader working (barely).
Remove petclaw's log.config file
Change path for logging configuration
Correct solution.read docstring
Add initial implementation of combined BC routine

Removes specfic BC routines _apply_q_bcs and _apply_aux_bcs to provide a clean
interface to boundary condtions.  Currently works with non-custom boundary
conditions.
Update Sedov.py

Made formatting changes to make code more readable.
Added an argument to switch between split and unsplit methods, so that this example can be used with the rpt3_euler.f90 and rptt3_euler.f90 files that were recently edited.
Update shocktube.py

Modified code to make it more readable.
Update README.md
Add coverage badge to README.
Add Travis badge to README.
Merge pull request #435 from mandli/remove-petclaw-log-config

Remove petclaw's log.config file
Merge pull request #434 from ketch/hdf5_reader

Make hdf5 reader work again
Merge branch 'master' into euler_3d_examples

* master:
  Add Travis badge to README.
  Add coverage badge to README.
  Update README.md
  Change path for logging configuration
  Remove petclaw's log.config file
  First attempt to use coveralls.io.
  hdf5 reader working (barely).
  More description of test parameters.
  Modify acoustics 2d variable test to be shorter
  Make psystem_2d tests run faster by using shorter time and smaller grid.
  Make 3D acoustics tests run faster by using smaller grid.
  Update version of hashdist that we rely on.
  Eliminate q_or_aux variable.
  Fix #426 (writing aux with PETSc leads to empty q file).
Fix HashDist to 0.3 tag
Merge pull request #443 from clawpack/ahmadia/hashdist_tag

Fix HashDist to 0.3 tag
Clean up 3D Euler examples.

Initial Sedov problem with cell averages.
Add test for Sedov (3D Euler) and HDF5 files.
Remove debug print statement.