Bug fix, EnvironmentInfoDescription should call super()

This was causing a failing integration test, now they all pass:

  $ nosetests -sv test_wrapper.py
  (... omitted ...)

  ----------------------------------------------------------------------
  Ran 19 tests in 1221.014s

  OK
Added boto.cloudsearch.layer1.Layer1.index_documents() test
Bumping version number.
Merge branch 'release-2.8.0'
Changing version for develop branch to include -dev
Merge branch 'develop' of github.com:boto/boto into develop
Update docs/source/s3_tut.rst
Updated EC2 tutorial to use recommended connect_to_region()
Added EBS information to the EC2 tutorial
Removed Sphinx warnings from beanstalk inline docs
Removed sphinx warnings on dynamodb inline docs
Fixed sphinx warnings on elasticache inline docs
Fixed up sphinx warnings in emr inline docs
Fixed up sphinx warnings in ec2 inline docs
Fixed up sphinx warnings in SQS inline docs
Fixed up sphinx warnings in route53 inline docs
Fixed up sphinx warnings in vpc inline docs
Fixed up sphinx warnings in elastictranscoder inline docs
Fixed up sphinx warnings in fps inline docs
Re-implemented cloudsearch connection tests using AWSMockServiceTestCase