Adding simple particle reading from lammps
add lammps to travis
Add simphony to travis.

Also add simple example to be run to make sure all
is well on travis.
remove file after installation to avoid flake errors
change how simphony is installed in travis
remove lammps files after installing on travis
fix command for in-place development
fix travis image
move two instance variables to __init__
stop lammps from outputing to screen
Add simple tests
Update to match simphony ( simphony/simphony-common#9 )

simphony/simphony-common@0c8a45b39a256b7141b517bfdee376022d7cb028
Reorganize example
initial version of example (matches up with LAMMPS example)
Update example doc note and fix pep8 errors
Fix example and unit tests
remove couette flow and simplify dump statements
update thermo doc in example
update dump commands in example
fix dump command