Recitation 1: Separate compiling and linking. Misc old changes to 5, 7.
README to summarize each recitatio note.
Merge branch 'master' of github.com:jrbalsano/cs3157-recitations

Conflicts:
	recitation-1.md
Be consistent about 1, 2. Use(a, b) instead of x, y to make a small point that variable names don't need to be consistent.
Merge pull request #24 from chmullig/master

Further separate the compilation and linking in recitation 1. Add README.