remove mongod options until issue 117 is resolved

Using the `mongod` options will cause client test to fail in 0.8.1. Leaving in the verbiage could confuse new users who are getting started (and using 0.8.1).

https://github.com/arunoda/laika/issues/117
Merge pull request #118 from AdamBrodzinski/gh-pages

remove mongod options until issue 117 is resolved