Merge pull request #8 from jkufner/master

Fix: Support natural joins
Merge branch 'master' of https://github.com/jkufner/fluentpdo into jkufner-master
Replace spaces with tabs
Merge pull request #10 from jkufner/master

Add option to disable smart join feature - fixes #5
Fix test 31
typos
Add composer support
Fix: Allow quoting of table names in joins