Improve Travis CI for clisp/ecl, add banner

.travis.yml

@@ -18,7 +18,7 @@ install:
 
 script:
         - cl -e '(pushnew :md5-testing cl:*features*)
-           (asdf:load-system "md5")
+           (ql:quickload "md5")
            (unless (md5::test-rfc1321)
              (uiop:quit 1))
            (unless (md5::test-other)

README.md

@@ -1,5 +1,7 @@
+[![Build Status](https://travis-ci.org/pmai/md5.svg?branch=master)](https://travis-ci.org/pmai/md5)
+
 This package implements The MD5 Message-Digest Algorithm, as defined
-in RFC 1321 by R. Rivest, published April 1992.
+in [RFC 1321][] by R. Rivest, published April 1992.
 
 It was originally written by Pierre R. Mai, with copious input from
 the cmucl-help mailing-list hosted at cons.org, in November 2001 and
@@ -9,7 +11,7 @@ been provided by Christophe Rhodes, Alexey Dejneka, Nathan Froyd,
 Andreas Fuchs, John Desoi, Dmitriy Ivanov, and Kevin M. Rosenberg, and
 have been reintegrated into this consolidated version by Pierre R. Mai.
 
-WARNING: The MD5 Message-Digest Algorithm has been compromised as a
+**WARNING:** The MD5 Message-Digest Algorithm has been compromised as a
 cryptographically secure hash for some time, with known theoretical
 and practical attacks.  Therefore use of this implemenation is only
 recommended for legacy uses or uses which do not require a
@@ -20,3 +22,5 @@ cryptographically secure for all other uses.
 This software is "as is", and has no warranty of any kind.  The
 authors assume no responsibility for the consequences of any use of
 this software.
+
+[RFC 1321]: https://tools.ietf.org/html/rfc1321