postgres schema
fixed phunit configs
Added signed variable to mysql table
removed stray semicolon
corrected testAddStringColumnWithSiqngedEqualsFalse test
restructured tests so expected & actual are the correct way around
Added information about PDOs
Update migrations.rst
install improvements
#170 : Try to locate phinx.php

If no config file passed as arg, try phinx.yaml and fallback to
phinx.php. Exception still ask for phinx.yaml as it is intended
behavior.
Fix typo in configuration.rst

devlopment -> development
Merge pull request #189 from 3onyc/patch-1

Fix typo in configuration.rst devlopment -> development
Merge branch '0.3.x-dev'
Merge branch '0.3.x-dev'
Merge branch '0.3.x-dev'
Update migrations.rst

Fix FK misplaced addForeignKey line
Add sample to set "On delete" and "On change" actions
Merge pull request #199 from fabienhespul/patch-1

Update migrations.rst
spaces and grammar
use `empty` to check $options['port']

i want use the `port: %%PHINX_DBPORT%%`, but other people maybe like the default port,
so just given a empty port config.
Adds tests for JSON format config files.