add single quotation marks to 'getSource' result and 'setSource' parameter

Signed-off-by: marshalys,user.email=marshalys@gmail.com <yuanshuai@jiandan100.cn>
T559 - cPhalcon - Added extends and excludefields in the model generation
	modified:   scripts/Phalcon/Builder/Model.php
	modified:   scripts/Phalcon/Commands/Builtin/Model.php
	modified:   scripts/Phalcon/Commands/Command.php
Merge pull request #67 from niden/master

Added excludefields and extends as parameters in model generation
Fixed relationship belongsTo and hasMany generation, added semicolon to relationship template string.
Merge pull request #68 from michaelkrone/master

Fixed belongsTo and hasMany relations
Added missing semicolon in InclusionIn and Email Validation templates.
Merge pull request #69 from michaelkrone/master

Email and InclusionIn validations triggered parse error
add single quotation marks to 'getSource' result and 'setSource' parameter
Merge branch 'master' of github.com:marshalys/phalcon-devtools
Merge git://github.com/phalcon/phalcon-devtools
add mapcolumn option for gen 'Independent Column Mapping' code
change comment of property
Merge pull request #70 from marshalys/master

add mapcolumn option for gen 'Independent Column Mapping' code
Merge remote-tracking branch 'phalcon/master'

Conflicts:
	scripts/Phalcon/Builder/Model.php