Merge pull request #14 from forrestbthomas/rules

fix(README): Decrease image size
feature(helpers, hero): Add "The Priest", add descriptions of starting "personalities"
fix(helpers.js): Make findNearestTeamMember look for friends, not enemies.
Merge pull request #15 from gjtrowbridge/add-healer-brain

feature(helpers, hero): Add "The Priest", add descriptions
docs(RULES): Update RULES.md