Merge pull request #52 from fommil/master

string query fixes
fix typo in docs
First stab
More ideas
This is a bad idea
But this will do the job
This is it
This is it with better names
implicits for the BigString types
compiler hints for implicits
BigNumbers should marshall to plain old Strings
BigNumber implicits
remove confusing raw serialisers and add a Spray JSON convenience for simple case classes
fix typo