Allow LaTeX display for NMatrix

This commit adds support for printing NMatrices via LaTeX. Not very much
to explain!
Merge pull request #24 from agarie/nmatrix_to_latex

Allow LaTeX display for NMatrix
fix symlink issue
v0.1.10
push pry binding if stack is empty
v0.1.11
IRuby#table add option maxrows

IRuby.table(..., maxrows: 10)
flexible display implementation

supports multiple formats per datatype

closes #25
Add IRuby#javascript

IRuby.javascript('alert("Hello, world");')
Add IRuby#svg

IRuby.svg(%{<svg
xmlns="http://www.w3.org/2000/svg"xmlns:xlink="http://www.w3.org/1999/xlink"><rect
x="10" y="10" height="100" width="100"style="stroke:#ff0000; fill:
powerful display system with format and datatype registry
changes
v0.1.12
replace IPython in title with IRuby
Merge branch 'master' of github.com:minad/iruby
latex output for Complex
improved IRuby.table, supports :maxrows, :maxcols
table output
IRuby.table: Better handling of Hash of Array
table examples