outlining future functions to implement.  suggections welcome.
adding geometric codes
trivial change
working on isolation_criterion
changed hard coded path to relative path.
working on isolation_criterion code
optimzing kdtree a little...
Merge pull request #8 from duncandc/develop

Develop
Merged Duncan's Pull Request #8 (which fixed the CATALOGS hard-coding, among other things)
with my local version that implements the table_bundle.

Merge remote-tracking branch 'upstream/develop' into develop
Re-instated hard-coding of CATALOGS dir. Should implement Erik's suggestion to use the astropy get_pkg_data method