Added information about PDOs
Update migrations.rst
Allows column types with extra info.

This was breaking my migrations when I have columns with unsigned. I did tests with a online tool, you can find the link here: http://www.phpliveregex.com/p/4E4
removing primary_key as a type. fixes #95
Merge branch 'patch-1' of https://github.com/saada/phinx into saada-patch-1
Merge branch 'saada-patch-1' into 0.3.x-dev
Bugfix

* Fixed implementation of SQLite autoincrement that was commented 
* Fixed the regular expression in changeColumn method that caused error to modify the attributes of the column
Merge pull request #273 from vitormattos/patch-1

Bugfix
Merge pull request #213 from andersonamuller/patch-1

Allows column types with extra info.
Add spatial types to AdapterInterface: geometry, point, linestring, and polygon
strip whitespace
add support for spatial types to getSqlType
add geospatial column names to getColumnTypes
add test for geo types in mysql