Added some bulk to Psychology introduction

Still working on it, but I'm down for the night.

I also introduced a few canned responses that shouldn't change from
introduction to introduction:

 - a description list of facts about LaTeX (facts.tex)
 - a couple of general questions and answers (qanda.tex)
 - a file of stylistic and logical macros (definitions.tex)
Spelling mistakes and an unfinished sentence

Also, I should probably mention issue #1.
Typo
Added microtype to psypaper.cls
Added affiliation command; more content for intro
Changed title
Merge pull request #6 from vermiculus/issue-1

Issue 1