Minor edits of "Determine Scope and Target"

A couple of minor punctuation changes.  Also changed "timescales" to "timelines" -- though I may have this wrong.  I think of time scales as more the units
Merge pull request #8 from happywebdiva/patch-8

I think 'timescales' is often used interchangeably with 'timelines'. Happy with the change though.

Minor edits of "Determine Scope and Target"