diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..f1b07b7
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,20 @@
+Copyright (c) 2011 Erik Michaels-Ober.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
index 4029fb0..b8eac0e 100644
--- a/README.md
+++ b/README.md
@@ -75,3 +75,8 @@ Submitting a Pull Request
 5. Run <tt>bundle exec rake test</tt>. If your changes are not 100% covered, go back to step 4.
 6. Commit and push your changes.
 7. Submit a pull request. Please do not include changes to the gemspec or version file. (If you want to create your own version for some reason, please do so in a separate commit.)
+
+Copyright
+---------
+Copyright (c) 2011 Erik Michaels-Ober.
+See [LICENSE](https://github.com/sferik/sign-in-with-twitter/blob/master/LICENSE.md) for details.