Update readme to include detail on how to get diagnostics.

Logger usage related update
Add links for Fiddler
<a href='#crh-start'></a><a href='#crh-data-%7B%22processed%22%3A%20%5B%22https%3A//github.com/AzureAD/azure-activedirectory-library-for-android/pull/316%23discussion_r21485867%22%5D%2C%20%22comments%22%3A%20%7B%22Pull%20c2dac8885a83004236317ad21bfe910fe12a9f2d%20README.md%2062%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/AzureAD/azure-activedirectory-library-for-android/pull/316%23discussion_r21485867%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22Were%20you%20going%20to%20fix%20this%20Debug%20level%20thing%3F%20%20%22%2C%20%22created_at%22%3A%20%222014-12-08T21%3A11%3A57Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/4307330%3Fv%3D3%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/RandalliLama%22%7D%7D%5D%2C%20%22title%22%3A%20%22File%3A%20README.md%3AL284-355%22%7D%7D%7D'></a>
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- [ ] <a href='#crh-comment-Pull c2dac8885a83004236317ad21bfe910fe12a9f2d README.md 62'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/AzureAD/azure-activedirectory-library-for-android/pull/316#discussion_r21485867'>File: README.md:L284-355</a></b>
- <a href='https://github.com/RandalliLama'><img border=0 src='https://avatars.githubusercontent.com/u/4307330?v=3' height=16 width=16'></a> Were you going to fix this Debug level thing?


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Can you add something in the logging section about how to send the log entries to the debug output so that they can be seen while debugging, and also so that they can be cut and paste in to a file easily.