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.
Updated Gantt chart again.
Final draft prepared, pdf name changed
Messed up, updated Gantt chart one last time
Added some summary of 'The IoT: A Summary'