Updated the CLI doc w/ the --dir directive and removed notes that you can't specify a location.
Updated the CLI docs based on Isao's feedback.
Made some copy edits.
More copy edits.
Made more copy edits.
Placed the new command syntax for testing mojit modules before the old syntax example.
Removed references to framework tests and added clarification about where coverage test results are written.
Added a short example of where coverage results are written.
Made copy edit.
Fixed the syntax for testing modules of a mojit, folded the coverage section under testing, and added that --directory is a long option.
Merge pull request #1157 from zhouyaoji/docs_update_cli

[docs] Updated the CLI instructions to include new options, some command changes.