Remove dependency to Bullet
Look for Bullet as a system dependency
Disable non-standard dependencies for now.
Fixes #4

Retry the command (one time only) if the connection was lost
Fixes #5

Reimplement runsource to reset the cache in case of SyntaxError

Behaviour of runsource based on:
http://docs.python.org/2/library/code.html
Call RosShell runcode instead of parent class
added ignore for temp files *~
fixed this error:floating-point literal cannot appear in a constant-expression
Add missing dependency to jrl-dynamics-urdf.
Call rosInit in command loadUrdf.

  Without this call the command fails.
Add documentation.
Create files in binary directory instead of source directory.
Update CMakeLists.txt to install libros_bridge

this will allow to close Issue #18
Use stand alone version of jrl-dynamics-urdf.