Fix formatting in example Makefile.

Make expects tabs, `:`s, or `=`s as separators. Make 3.81 (at least) fails
while executing the example Makefile as previously provided (with 4-space
indentation not tabs).
Add note to Readme.md re: Makefile indentation.

Even though commit 6b229252d3d fixes the indentation of the Makefile example
code snippet, GitHub converts the tab into 4-space indentation when it renders
the README. This commit adds a note explaining that you may hit an error if you
copy and paste the snippet, and if you do, you should replace the 4-space
indentation with tabs.
Support for treating the Jade repo as the jade-js-source ruby gem

Makes things a little nicer for those of us stuck in the old world,
especially when forking/testing new changes to Jade proper.
fix wrong new lines for include filters
pass filename option to filters
pass right file to filter
Merge pull request #858 from eldargab/master

fix wrong new lines for include filters
Merge pull request #859 from eldargab/filename

Pass filename option to include filters
fix some styling
Merge pull request #842 from hangtwenty/master

Simple README change - Make example Makefile code snippet use tabs not spaces
sever dependency on the 'path' module which doesn't exist in browser/ruby
update compiled assets
Fix typo in readme
Delete model example [closes #144]

I think this was an example of lixicly scoped filters, which we no
longer support.
Add test script to package.json

This should make travis actually build the repo.
Run tests in the latest version of node
Fix windows line endings
convert test format to mocha from expresso
whitespace
modify indent