Added ramping example to ReadMe. Added error-checking for invalid input for concurrency
Merge pull request #89 from cloudfoundry-incubator/ramp_readme

Added ramping example to ReadMe. Added error-checking for invalid input for -concurrency
Fixed interval/stop to work with ramping concurrency
Merge pull request #92 from cloudfoundry-incubator/interval_fix

Fixed interval/stop to work with ramping concurrency
package context
allow rest:api from web ui