* add templates for block i-model
* add aggregation block for i-model
* add method getOrCreate for BEM.MODEL
Separate method addByIndex for models-list field
Merge branch 'master' of github.com:verkholantsev/bem-mvc
Merge pull request #79 from verkholantsev/master

add ability to add model to models-list at specific index
add info about i-model
style fixes
Merge pull request #78 from bem/i-model

Add block to generate data for models from BEMHTML-templates