Merge pull request #8 from slojo404/rst2ipynb_update

Rst2ipynb update
use GenericNodeVisitor, removed redundant code
make rst2ipynb.py executable
unused import and typos
adding a basic test and moving tutorial.rst test file to tests directory
Merge pull request #9 from ivanov/rst2ipynb_update

yeah wow that seems a lot better
adding a basic test and moving tutorial.rst test file to tests directory
clean up
clean up
switching to Popen to be python 2.6 friendly
Merge pull request #10 from slojo404/rst2ipynb_update

adding a basic test and moving tutorial.rst test file to tests directory
First working version of latex converter.
Improve SVG support, other small fixes.
Add preamble support for fully self-contained output TeX files.
Fix handling of raw cells in all converters, add stderr to test nb
Fix handling of enumerations
Fix handling of local files with the /files/ pseudo-url.
full inkscape path on OS X

need to use the full inkscape path on osx to use it as a command line
Tweak spacing in LaTeX output.
Write output to current directory, instead of to source directory.