Merge pull request #10 from lexi-lambda/output-utf8

Create utf-8 html output (and fix a typo)

private/html.rkt

@@ -62,6 +62,7 @@
   (define %age (get-percentages/file path covered?))
   `(html ()
     (head ()
+          (meta ([charset "utf-8"]))
           (link ([rel "stylesheet"] [type "text/css"] [href ,path-to-css])))
     (body ()
           ,@(%s->xexprs %age)

raco.rkt

@@ -42,7 +42,7 @@
   (printf "generating test coverage for ~s\n" files)
   (define passed (apply test-files! files))
   (define coverage (remove-dirs (get-test-coverage) exclude-dirs))
-  (printf "dumbing coverage info into ~s\n" coverage-dir)
+  (printf "dumping coverage info into ~s\n" coverage-dir)
   (generate-coverage coverage coverage-dir)
   (exit
    (case passed