Got a send expression to REPL

Seems odd that evaluating C-x C-e would put the results in a different
name space than what is typed in a REPL, so this allows me to have C-c
C-v send the expression to the REPL.
Requiring the js2-mode to make sure it gets loaded
Fix a powerline display bug
Got a send expression to REPL

Seems odd that evaluating C-x C-e would put the results in a different
name space than what is typed in a REPL, so this allows me to have C-c
C-v send the expression to the REPL.
Better line numbering with relative numbers

Also pegged the size of the line numbers which makes them more
noticeable next to the text, but also allows me to increase the size of
the buffers' text.
Fontify all the source code blocks.
Number of new functions used for two conf talks.

These changes include new functions used during the Emacs demonstration
talk given at the Open Source Bridge.
Fixed the prompt so it uses mine.
Minor formatting.