Update README.md

Fix grammatical/spelling errors. Paste in copy of MIT License with recommended copyright format.

README.md

 [![][ButlerImage]][website] 
 
-Jenkins CI
-==========
-Copyright © 2004–, Kohsuke Kawaguchi, Sun Microsystems, Inc., and a number of other contributors. Licensed under [MIT License].
+# About
+In a nutshell, Jenkins CI is the leading open-source continuous integration server. Built with Java, it provides over 1000 plugins to support building and testing virtually any project.
 
-About
------
-In a nutshell Jenkins CI is the leading open-source continuous integration server. Built with Java, it provides over 1000 plugins to support building and testing virtually any project.
-
-Downloads
+# Downloads
 ---------
-Non-source downloads such as WAR file and several Linux packages can be found on our [Mirrors].
+Non-source downloads such as WAR files and several Linux packages can be found on our [Mirrors].
 
-Source
+# Source
 ------
 Our latest and greatest source of Jenkins CI can be found on [GitHub]. Fork us!
 
-News and Website
+# News and Website
 ----------------
-All about Jenkins CI can be found on our [website]. Follow us on Twitter @[jenkinsci].
+All information about Jenkins CI can be found on our [website]. Follow us on Twitter [@jenkinsci].
+
+# License
+
+The MIT License (MIT)
+
+Copyright (c) 2004 Kohsuke Kawaguchi, Sun Microsystems Inc., and a number of other contributors. 
+
+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.
 
 [ButlerImage]: http://jenkins-ci.org/sites/default/files/jenkins_logo.png
 [MIT License]: https://github.com/jenkinsci/jenkins/raw/master/LICENSE.txt
 [Mirrors]: http://mirrors.jenkins-ci.org
 [GitHub]: https://github.com/jenkinsci/jenkins
 [website]: http://jenkins-ci.org
-[jenkinsci]: http://twitter.com/jenkinsci
+[@jenkinsci]: http://twitter.com/jenkinsci