adding lexer thingers

eg/yo-dawg.hy

@@ -0,0 +1,10 @@
+; vim: tabstop=2 expandtab shiftwidth=2 softtabstop=2 filetype=lisp
+; Copyright (c) Paul Tagliamonte, in sofar as any of this is at all
+;  copyrightable.
+
+(import ["json"])
+
+(print "I'll eval s-expressions you input")
+(loop (print
+  (kwapply (json.dumps
+    (lex (read))) {"sort_keys" true "indent" 4})))