Change key field variable name from $id to $pkVar$ in editAction

on line 77 there was $id variable used, but if table primary key have another name, plural variable on like 72 will be same name, so $id variable case error.
Fix PHP Fatal error:  Cannot access  property **Migration_**::$_connection in **

Corrects for 
http://docs.phalconphp.com/en/latest/reference/migrations.html#writing-migrations
Fixed CodeStyle of generated migrations
Merge branch 'master' of https://github.com/galkin/phalcon-devtools
Merge pull request #77 from galkin/master

Fixed Codestyle of generated migrations to PSR2
Merge pull request #75 from vedmaka/master

Small fix in scaffold template
PHPDoc should specify that setters return $this
Merge pull request #80 from chuyskywalker/master

PHPDoc for models to specify that they return $this
Spelling fix
Merge pull request #81 from g3dut1s/master

Fix spelling in Controller command
Enable Web Tools
Windows path replace for tools folder
Update README.md

fixed a bug on the composer json code
Merge pull request #83 from dedalozzo/master

the composer.json content raise an error, I fixed it
Merge pull request #82 from g3dut1s/master

Web Tools Installation
fix PTOOLSPATH
Merge pull request #85 from tofan-andrei/master

fix PTOOLSPATH in phalcon.bat
Adding namespacing support for all-models command
Merge pull request #86 from p0rsche/master

Adding namespacing support for all-models command
Updating 1.2.0 stubs