Added formatted otu category significance tables.

This includes a new option --alpha to determine what OTUs will be included in the output HTML tables.
Improvements to otu category significance tables.

Tables look better and provide links to each taxonomic level.
Removed premature break that I used for testing.
Cleaned up project (misc. changes).

Several changes in preparation for the first real run of this system:
* Renamed personal_microbiome/ directory to my_microbes/
* Cleaned up personal_results.py script documentation, updated usage examples to match current interface, etc.
* Removed unnecessary readmes scattered throughout
Removed extra readme I missed before.
Updated references to personal_microbiome.

Imports, tests, etc. now correctly reference my_microbes.
Renamed references to distance matrices.

Distance matrices are not used by this system, so all references have been updated to be coordinate files.
Added generate_participant_table.py.

This new script generates an HTML table of personal IDs with links to personalized results. Still needs unit tests added.
Added unit tests for format_participant_table().

This includes a new test_format.py file.
Added all_tests.py.

This is based on the one used by QIIME. Also removed a couple of unnecessary files under tests/.
Merge pull request #33 from jrrideout/issue_32

Added all_tests.py.
Merge pull request #31 from jrrideout/issue_16

Added generate_participant_table.py.
Merge branch 'master' into otu_cat_sig

Conflicts:
	personal_microbiome/format.py
Merge branch 'master' into issue_28
Merge pull request #30 from jrrideout/issue_28

Misc. cleanup in preparation for first real run next week.
Merge branch 'master' into otu_cat_sig

Conflicts:
	my_microbes/util.py
Fixed a few bad imports.
Merge pull request #29 from jrrideout/otu_cat_sig

Added otu_category_significance.py tables.
Fixed bug with splitting OTU tables.

If the category to split on had state(s) in the mapping file but not in the OTU
table, the script would fail. This happened when trying it out on the full
dataset.
Fixed bug when suppressing OTU category tables.