Add note on homepage about open source, update readme

Author: jaltekruse

README.md

@@ -1,9 +1,33 @@
-# [FreeMath](http://freemathapp.org)
+# [Free Math](http://freemathapp.org)
 
 Free Math is an open source offline React web application for managing digital math homework.
+
+[freemathapp.org](http://freemathapp.org)
+
+Join our revolution, Free Math has already been used by tens of thousands of students and teachers
+to improve communication and feedback in their math classes.
+
+# Building
+
+Install dependencies and start the development server:
+```sh
+$ npm install
+$ npm start
+```
+
+Run the unit tests:
+```sh
+$ npm install
+$ npm run tests
+```
+
+Build a minified production version:
+```sh
+$ npm install
+$ npm run tests
+```
 
-# Contact the Developer
- I am currently looking for classes to pilot the software, if you would like to   discuss how you could use Free Math in your classroom send me a message at this address.
+# Contact the Maintainers
 developers@freemathapp.org
 
 Follow the project <a href="https://www.facebook.com/freemathapp">facebook</a> <a href="https://twitter.com/freemathapp">twitter</a>

public/index.html

@@ -245,6 +245,25 @@ <h3>
                </form>
             </div>
          </div>
+         <div class="homepage-wrapper" style="padding-top:100px">
+            <div class="homepage-text homepage-center">
+               <h2>Get Involved</h2>
+               <p>
+                    Free Math is open source, which means the source code of the site is available to
+                    view, modify and redistribute under the terms of the <span style="white-space: nowrap;"><a href="http://www.gnu.org/licenses/">GNU Public License</a>.</span>
+                    <br />
+                    <br />
+                    Help us build our revolution, Free Math has already been used by tens of thousands of students and teachers
+                    to help improve feedback and discussion in their classes.
+                    <br />
+                    <br />
+                    <a href="https://github.com/jaltekruse/Free-Math/issues" target="_blank" rel="noopener noreferrer">
+                        Report Bug or Request Feature</a><br />
+                    <a href="https://github.com/jaltekruse/Free-Math" target="_blank" rel="noopener noreferrer">
+                        Source Code</a>
+            </div>
+            </p>
+         </div>
          <div class="homepage-wrapper" style="padding-top:100px">
             <div class="homepage-text homepage-center">
                <h2>Office Hours</h2>