Merge pull request #3 from rust-lang-nursery/jonathandturner-patch-1

Update README.md

Author: nikomatsakis

README.md

@@ -1,3 +1,3 @@
-An attempt to docuemnt how the compiler works. The intention is to
+An attempt to document how the compiler works. The intention is to
 bootstrap this "in repo" and eventually move the text over into the
 main rustc repo.