Don't override tojson() with a colorized version.

This is in preparation for adding mongo-tabular. The colorized version
adds hidden control characters for colors, which mess with the field
width calculations that mongo-tabular makes, so move the color version
to tojson_c() for now.
Add "table output" support to cursor objects.

As initially developed at https://github.com/nigelmcnie/mongo-tabular

This allows you to call .t() on cursor objects to get a RDBMS-style
"table" output of the data in the cursor.
Some documentation for .t()
Move documentation to a notsuck location
Merge pull request #19 from nigelmcnie/add-mongo-tabular

Add mongo tabular
Added NumberLong support

- NumberLong(<n>) is now printed as red '<n>L'
Merge pull request #20 from digal/master

Added NumberLong support
Adds handling for DBRef objects
Merge pull request #24 from poezn/master

Adding handling for DBRef
major code lint