brew audit - Google Code homes w/o trailing slash

Without a trailing slash, you redirect to the URL w/ a slash, so
might as well have it there in the first place.

Library/Contributions/examples/brew-audit.rb

@@ -103,15 +103,28 @@ def audit_formula_options f, text
   return problems
 end
 
+def audit_formula_instance f
+  problems = []
+
+  # Don't depend_on aliases; use full name
+  aliases = Formula.aliases
+  f.deps.select {|d| aliases.include? d}.each do |d|
+    problems << " * Dep #{d} is an alias; switch to the real name."
+  end
+
+  # Google Code homepages should end in a slash
+  if f.homepage =~ %r[^https?://code\.google\.com/p/[^/]+[^/]$]
+    problems << " * Google Code homepage should end with a slash."
+  end
+
+  return problems
+end
+
 def audit_some_formulae
   ff.each do |f|
     problems = []
 
-    # Don't depend_on aliases; use full name
-    aliases = Formula.aliases
-    f.deps.select {|d| aliases.include? d}.each do |d|
-      problems << " * Dep #{d} is an alias; switch to the real name."
-    end
+    problems += audit_formula_instance f
 
     text = ""
     File.open(f.path, "r") { |afile| text = afile.read }