python/pyflakes: Wrap README at 72 columns.

Signed-off-by: B. Watson <yalhcru@gmail.com>

python/pyflakes/README

@@ -1,17 +1,16 @@
 PyFlakes a Lint-like tool for Python, like PyChecker. It is focused on
 identifying common errors quickly without executing Python code.
 
-Its primary advantage over PyChecker is that it is fast. You don't have
-to sit around for minutes waiting for the checker to run; it runs on most
-large projects in only a few seconds.
+Its primary advantage over PyChecker is that it is fast. You don't
+have to sit around for minutes waiting for the checker to run; it runs
+on most large projects in only a few seconds.
 
 The two primary categories of defects reported by PyFlakes are:
 * Names which are used but not defined or used before they are defined
 * Names which are redefined without having been used 
 
-These can each take many forms. For example, PyFlakes will tell you when
-you have forgotten an import, mistyped a variable name, defined two
-functions with the same name, shadowed a variable from another scope,
-imported a module twice, or two different modules with the same name, and
-so on.
-
+These can each take many forms. For example, PyFlakes will tell you
+when you have forgotten an import, mistyped a variable name, defined
+two functions with the same name, shadowed a variable from another
+scope, imported a module twice, or two different modules with the same
+name, and so on.