message: cleanup txn_test_gen_plugin readme markdown
diff: This plugin provides a way to generate a given amount of test transactions per second. It runs internally to eosd to reduce overhead.
  ##Setup
  +
  Create the two accounts used for transactions. Must give account & private key used for creation.
  ```
  @@ -16,6 +17,7 @@ curl --data-binary '["inita", "5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvF
  ```
  ##Starting/Stopping
  +
  Start generation:
  ```
  