updated htmls and patches
new htmls and pd patches for music/pd section
Renaming 1.c.iii.6 exercise patch to follow proper convention.
Removing more temporary empty files.
updates to FM and AM patches
Merge branch 'master' of https://github.com/cmuphyscomp/physcomp-examples

Conflicts:

1_energy-information-transduction/c_pd-starter/iii_advanced-pd-music/1.c
.iii.6_music-synth-am-fm/1.c.iii.6_music-synth-am-fm.html
updated pd files for AM/FM
Saving a few copy edits.
Reverting the 1.c.iii.6 renaming to fix the conflict.
1.c.iii.7 changes
Merging in minor copy edits to 1.c.iii.1 and 1.c.iii.2
Updating assignment text for 1.c.v.
Merge branch 'master' into gh-pages
Updating index files.