Merge pull request #5600 from ricardoquesada/setup_fixes

fixes for linux
better doctrings

improved documentation for Node
Improved documentation
Merge pull request #5602 from ricardoquesada/node_fixes

Fixes docstrings
fixes in the release notes
Release Notes improvements
fix bug for outdated transform status
Merge branch 'develop' into develop_fix_node_transform_bug

* develop:
  Improved documentation
  better doctrings
  fixes for linux
  small setup.py fixes
  Update CHANGELOG [ci skip]
  closed #4291：open CCEditBox as modal dialog
  Fixes 'schedule test/issue#2268' crashes
  closed #4150:  fix physics position/rotation tag bug.
set ANDROID_SDK_ROOT
fix conflict
Merge pull request #5605 from minggo/install

support setting android sdk root
Merge pull request #5604 from dabingnn/develop_fix_node_transform_bug

Develop fix node transform bug
Merge pull request #5547 from nutty898/develop_nutty_modify_framework_for315

Fixd bugs for editor
[AUTO][ci skip]: updating cocos2dx_files.json
Modify reader
Merge pull request #5606 from CocosRobot/update_cocosfiles_1394159632

[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #5592 from shujunqiao/develop

modify autotest.py
[Jenkins] fix android build
Merge branch 'develop' into develop_nutty_modify_framework_for315
Merge pull request #5608 from lmskater/fix-android-build

[Jenkins] fix android build