Update for mapnik 2.0 release.
Added -b flag for customizing tile buffer size.
Fixed ivtile to support rendering more tiles than a single Queue can …
…hold. Also added skip-existing flag. Inc'ed version.
Added ability to specify an S3 path for deployment. Closes #5.
Added flag for custom font paths. Closes #2.
Added support for custom width and height. Refactored code to be more…
Factored processes flag into base.
Refactored ivtile to common utility base.
Basic working ivframe.
Added non-functional ivframe.