Added working speaker notes for slides.
Fixing docs.
Fixing info in trailets.
Fixing names for aliases.
skip tests when display variable is not set
fix failing tests without X in IPython.lib

note that pylab_not_importable appears to not be enough to catch if
we're running X. I'm able to import pylab, and it's only %%matplotlib
magic that causes these tests to die
Add coalesce streams test
Renamed build notebook funct so nose test doesn't run it
Added base transformers test class and added CSSHTMLHeaderTransformer tests
Inlining is not an attribute of resources
Updated comment
Removed invalid comment (from previous commit) and added a new line
Added png output
Enabled Transformer
Added extract output test
Added latex transformer test
Added utility function to build a proper resources dict
Added revealhelp transformer tests
Added sphinx transformer tests
Add svg2pdf transformer tests