Update the reference of submodule plugin-x.
yeah... love in includes
<3
Merge pull request #6379 from ricardoquesada/more_love_in_includes

yeah... love in includes
compiles on linux
Merge pull request #6380 from ricardoquesada/compiles_on_linux

compiles on linux
change tab to space
Merge pull request #6384 from dabingnn/v3_optimize

change tab to space for CCDirector.cpp
fixed ui layout clip
Update .travis.yml, Travis ci only builds 'v3' branch
[Jenkins][ci skip] Fix branch to v3 v2
Merge pull request #6385 from lmskater/change-develop-to-v3

[Jenkins][ci skip] Fix branch to v3 v2
Merge pull request #6386 from pipu/fixed_bug_ui_layout_clip

fixed the clipping of ui layout read from CocoStudio could not work
template work on IOS/Mac now
template for linux cpp
'develop' -> 'v3' branch for travis ci.
Merge pull request #6388 from dumganhar/travis-ci-build-fix

'develop' -> 'v3' branch for travis ci.
fixed compile fail
fixed return type is not right
Merge pull request #6390 from Dhilan007/v3

fixed compile fail on wp8
clean for kazmath in project file