first commit
new readme
some basics working
can use Mongo as input and output
better connection handling
working on in/out keys, etc..
use MongoURI
hold onto Mongo
- Added Ivy for dependency management
- Add a README section for open items to remind me to check & test XML
  configs
Added TaskAttemptContext as an argument (and gettable property) in
MongoRecordWriter, to allow access to job config from places such as
Pig.
New Pig StoreFunc for MongoDB
Changed ant to automatically download ivy and use a local version so as
not to require pollution of system ant
Add support for BSONObjects in output writing.  This is especially key
for Pig output as the Schema will be used to convert out to a full DBObject.
In the case of a BSONObject for key, set it as _id; for value, do a
putAll(value) against the object to be saved.
- Pig instructions
Fixed Ivy version
- Fixed visibility of MongoStorage - Added test scripts
- Added logging to finish debugging Pig now works with instructions in README.md
some readme additions
TODO list
- Migrating towards a more 'confighelper' style config which will better
  allow XML config files as well as manual configuration.