Merge pull request #744 from isometriks/master

Only create one instance of MenuConverter
Not making dropdowns of items affected by depth limit
Proposition to not use Assetic in examples.

Otherwise they would be compiled and dumped into users project directory.
Missing PHPDoc @throws
Update fields.html.twig

fixes #745
Merge pull request #749 from james75/master

Update fields.html.twig
Merge pull request #746 from kaiwa/patch-2

Not making dropdowns of items affected by depth limit
Merge pull request #747 from hyperunknown/patch-base-initializr

Proposition to not use Assetic in examples.
Merge pull request #748 from hyperunknown/patch-phpdoc-menu-extension

Missing PHPDoc @throws
Fixed doc -
Merge branch 'master' of git://github.com/phiamo/MopaBootstrapBundle
fixed gitignore - Fixes #752
Added possibility to control inverted icons from the type
Merge branch 'master' of git://github.com/phiamo/MopaBootstrapBundle
hackish try to add icons to textareas
Update README.md

Updated version flag in composer example to prevent others from running into issues that are solved in beta3
Fixed wrong casing in some of the output

Some words were uppercased in the middle of sentences
Merge pull request #757 from cleentfaar/patch-2

Fixed wrong casing in some of the output
Merge pull request #756 from cleentfaar/patch-1

Update README.md
fixed missing import for InvalidArgumentException