adding my name to supporters
removes litany of differences from first para, which is already listed in the third para, and reflows text at 78 characters.
corrects double period typo
freenode is not spelled freemode, apparently
wordsmithing some bits to read better; adding references to @helpers and code4lib volunteers
add sig
@anarchivist signs :pencil:

Signed-off-by: Mark A. Matienzo <mark@matienzo.org>
@helrond signs
Changed line 15 based on suggestion from Devchix.
Update SUPPORTERS.txt
Merge pull request #15 from sdellis/patch-1

Update SUPPORTERS.txt
Merge pull request #14 from gloriousgeneralist/master

Changed one line to tighten our definition of harassment.
Update code_of_conduct.md
never give an architect a commit bit, 'z'all
Update code_of_conduct.md
Merge pull request #16 from sdellis/patch-2

Update code_of_conduct.md
per MJRay's comments on the mailing list
headerizes the README and adds a section to make it clear how to submit pull requests
Add 'Discuss' section and non-Git contribution instructions
Add 'Discuss' section and non-Git contribution instructions