Procedure for adding users by name
Added a procedure to make a rider out of thin air

SignUpRand creates a user and returns their ID, the procedure takes no
arguments.
Merge pull request #9 from bikeshare/signupName

Procedure for adding users by name
Merge branch 'insertinto' of https://github.com/bikeshare/h-store into insertinto

Conflicts:
	src/benchmarks/edu/brown/benchmark/bikerstream/BikerStreamClient.java
	src/benchmarks/edu/brown/benchmark/bikerstream/BikerStreamProjectBuilder.java