Minor grammatical changes

In "Integrate into Project Life Cycle," (1) adding a comma to the initial description; (2)  clarifying clause in key action 2 description;  (3) deleting extraneous "to" in key action 3 description and clarifying the final clause; (4) adding "a" to key action 4; (5) breaking up a run-on sentence and correcting a sentence fragment in key action 4 description; (5) deleting comma from key action 5 description; (6) in key action 6 description, bringing verbs into parallel tense and adding hyphen to "go-live."
Merge pull request #5 from happywebdiva/patch-5

Minor grammatical changes