final edits of the 1. assignment
fixed summary
assignment2 (final edit):

- shortened summary
- fixed broken links
- changed intro to infrastructure section
- added retrospective to summary section
- smaller fixes
assignment3 (final edit):

- changed intro to infrastructure section
- added references to Krogh (lurking), Shah (motivation) and Susan (LPP) et al.
- rewrote contribution section
- added retrospective to conclusion section
- smaller fixes
assignment 4 (final edit):

- added retrospective to conclusion section
- smaller fixes/typos
Merge remote-tracking branch 'upstream/master'
assignment 6 (final edit):

- clarified some numbers in the funding section
- added link to their donation page
- added quotation of Hypothes.is about why they need donations
- added link to the comments section on kickstarter
- added quote of one of the donors about why he supports Hyopothes.is
- added retrospective to conclusion section
- smaller fixes
assignment 7 (final edit):

- added text to the technical modularity section
- rewrote contributions section, highlighting what I have worked on.
- smaller fixes
Merge remote-tracking branch 'upstream/master'
Merge pull request #247 from tomnar/master

Updated all six assignments.