Update readme

Fixes #8.

Author: cbm755

README.md

@@ -5,3 +5,16 @@ Joel Feldman, Richard Froese, Brian Wetton and others.
 
 These are the lecture notes for UBC's Math 152 Linear Systems
 course on linear algebra and applications.
+
+Compiling
+---------
+
+`pdflatex notes.tex`.
+
+
+Reporting problems, fixing typos, etc
+-------------------------------------
+
+The canonical repo for this document is at
+[github.com/UBCMath/Math152notes](https://github.com/UBCMath/Math152notes)
+where you'll find an issue tracker.