updated links to ref card and demo projects
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<p>Some useful sources of information:
<ul>
<li><a href="http://www.eclipsecon.org/2011/sessions/?page=sessions&id=2049">Tycho tutorial and exercises (EclipseCON 2011)</a></li>
- <li><a href="http://github.com/sonatype/sonatype-tycho/tree/master/tycho-demo">Tycho demo projects</a></li>
- <li><a href="https://docs.sonatype.org/display/TYCHO/Tycho+reference+card">Tycho reference card</a></li>
+ <li><a href="http://wiki.eclipse.org/Tycho/Demo_Projects">Tycho demo projects</a></li>
+ <li><a href="http://wiki.eclipse.org/Tycho/Reference_Card">Tycho reference card</a></li>
<li><a href="http://mattiasholmqvist.se/2010/02/building-with-tycho-part-1-osgi-bundles/">Blog series "Building with Tycho" by Mattias Holmqvist</a></li>
<li><a href="http://github.com/sonatype/sonatype-tycho/tree/master/tycho-its/projects/">Tycho integration tests contain many examples you can use as templates</a></li>
<li><a href="http://dev.eclipse.org/mhonarc/lists/tycho-user/">Search the tycho-user mailing list archive</a></li>
