Fixed documentation
Updated docs
Added additional args
Trying to fix tests
Updated new error handling for both data ret fns

Also updated unit tests. Now Travis should build correctly again.
Fixed missing import.
updated new example in README
bumping up version number
Fixed issue with limits not working.
Map now deals with more general cases, esp when plotting more than species
Improved data retrieval

Now you can search without a genus or full scientific name. This allows for e.g. search simply by habitat or a bounding box.