Further proofreading of report

Fixed up some minor grammatical and spelling mistakes. Also fixed up the broken section references. The comment on the BeagleBone Black having a 700MHz CPU was fixed (it has a 1GHz CPU; the 700MHz one is likely a reference to the old BeagleBone).

Also changed the UWA logo to the vector version, just because :P.

Notes:
There are still broken references (e.g reference to Appendix and a graph in the image section???)