Grammatical edits to report

Merged some of the minor edits that were done by @b-en in pull request
13, and also made some minor grammatical edits myself. Some examples
include:

GitHub -> Github (consistency across report)
Proper nouns vs. Regular Nouns (in Methods/Organization & Management)
Updated Gantt chart to reflect purchase and shipping time of our
sensors.
Removed drafts of initial parts, updated PDF of final draft.