Readme nits

Testing code review, and fixing things in the docs.
<a href='#crh-start'></a><a href='#crh-data-%7B%22processed%22%3A%20%5B%22https%3A//github.com/parisiale/libpuppetdb/pull/1%23issuecomment-48720953%22%5D%2C%20%22comments%22%3A%20%7B%22General%20Comment%22%3A%20%7B%22html_url%22%3A%20%22https%3A//github.com/parisiale/libpuppetdb/pull/1%23issuecomment-48720953%22%2C%20%22comments%22%3A%20%5B%7B%22body%22%3A%20%22This%20is%20a%20global%20testing%20comment%21%22%2C%20%22created_at%22%3A%20%222014-07-11T11%3A41%3A02Z%22%2C%20%22user%22%3A%20%7B%22avatar_url%22%3A%20%22https%3A//avatars.githubusercontent.com/u/7150922%3F%22%2C%20%22html_url%22%3A%20%22https%3A//github.com/parisiale%22%7D%7D%5D%2C%20%22title%22%3A%20%22General%20Comment%22%7D%7D%7D'></a>
<a href='https://www.codereviewhub.com/'><img src='http://www.codereviewhub.com/site/github-bar.png' height=40></a>
- [ ] <a href='#crh-comment-General Comment'></a> <img src='http://www.codereviewhub.com/site/github-remaining.png' height=16 width=60>&nbsp;<b><a href='https://github.com/parisiale/libpuppetdb/pull/1#issuecomment-48720953'>General Comment</a></b>
- <a href='https://github.com/parisiale'><img border=0 src='https://avatars.githubusercontent.com/u/7150922?size=16' height=16 width=16'></a> This is a global testing comment!


<a href='https://www.codereviewhub.com/parisiale/libpuppetdb/pull/1?mark_as_completed=1'><img src='http://www.codereviewhub.com/site/github-mark-as-completed.png' height=26></a>&nbsp;<a href='https://www.codereviewhub.com/parisiale/libpuppetdb/pull/1?approve=1'><img src='http://www.codereviewhub.com/site/github-approve.png' height=26></a>&nbsp;<a href='https://github.com/parisiale/libpuppetdb/pull/1'><img src='http://www.codereviewhub.com/site/github-refresh.png' height=26></a>
<a href='#crh-end'></a>
Contractions are good!