Issue title: Could you please add a Cocos2dx V3.0 Android build project?
 Issue body: Hi!, I'm trying to compile the Cocos2dx 3.0 demo that comes with this library to make it work in Android (DragonBonesCPP-dev\demos\cocos2d-x-3.x\DragonBonesCppDemos) 
But I'm getting trouble making it work. Specially because there are not android-mk files in the renderer/cocos2dx3.0  folder. I tried to make it myself but I can't get the include files right.

Is there any working test sample for using Cocos2dx 3.0 with DragonBones?  

Im using Eclipse and windows 7.

Thanks in Advance, Really great library!!

 Comments: 
 Comment 0: Just copy the lib files to your own project.
That would be files in `dragonbones
<https://github.com/DragonBones/DragonBonesCPP/tree/dev/dragonbones>` and `
cocos2d-x-3.x
<https://github.com/DragonBones/DragonBonesCPP/tree/dev/renderer/cocos2d-x-3.x>
`.
Then you can add `*.h` and '*.cpp' to your project's make file.

2014-07-01 3:04 GMT+08:00 klanco holmesdebra@example.com:

> Hi!, I'm trying to compile the Cocos2dx 3.0 demo that comes with this
> library to make it work in Android
> (DragonBonesCPP-dev\demos\cocos2d-x-3.x\DragonBonesCppDemos)
> But I'm getting trouble making it work. Specially because there are not
> android-mk files in the renderer/cocos2dx3.0 folder. I tried to make it
> myself but I can't get the include files right.
> 
> Is there any working test sample for using Cocos2dx 3.0 with DragonBones?
> 
> Im using Eclipse and windows 7.
> 
> Thanks in Advance, Really great library!!
> 
> —
> Reply to this email directly or view it on GitHub
> https://github.com/DragonBones/DragonBonesCPP/issues/16.

 Comment 1: Hi moremorefun! I'm trying to do as you tell but i'm finding a lot of problems to compile the project on android.

For example, some of the libraries in the cocos2d-x-3.x renderer require the kazmath/math/ libraries which are not included in the cocos2d-x-3x engine. I try to copy those libraries as well, but then the Kazmath libraries need some other c++ files from the cocos2d-x-2 project and so on...The renderer libs also ask for a lot of deprecated references like CCShaderCache.h.

So I ve tried a lot this week without any sucess, Is anyone working with the current version of cocos2d-x-3x in Android? 

Right now I've builded the cocos2d-x-2-x version, which wasn't easy but I had some clues. Anyway, the cocos2d-x-2x version lacks some orientation change utilities, and also some shaders stop working when the application goes to background. So that's what I'm trying to compile the DB Library with latest version. Maybe I'm missing something because I'm very new in c++, I've been using dragonbones in javascript with createjs (which is great!).

Also this was asked in the cocos2dx forum
http://discuss.cocos2d-x.org/t/cocos2d-x-3-x-with-dragonbones/14953

Anyway, thanks for your time!

 Comment 2: I have try add `include` dirs to make it work, Finally I give up.
Because some files are disappeared  in 3.x.
So my advice is change this lib's include `#include *` to `#include
cocos2d.h` and feel free to change the code to make the program pass
compile.
Sine it's face the 2.x cocos2d's lib and 3.x make a lot of change.

2014-07-02 13:04 GMT+08:00 klanco holmesdebra@example.com:

> Hi moremorefun! I'm trying to do as you tell but i'm finding a lot of
> problems to compile the project on android.
> 
> For example, some of the libraries in the cocos2d-x-3.x renderer require
> the kazmath/math/ libraries which are not included in the cocos2d-x-3x
> engine. I try to copy those libraries as well, but then the Kazmath
> libraries need some other c++ files from the cocos2d-x-2 project and so
> on...The renderer libs also ask for a lot of deprecated references like
> CCShaderCache.h.
> 
> So I ve tried a lot this week without any sucess, Is anyone working with
> the current version of cocos2d-x-3x in Android?
> 
> Right now I've builded the cocos2d-x-2-x version, which wasn't easy but I
> had some clues. Anyway, the cocos2d-x-2x version lacks some orientation
> change utilities, and also some shaders stop working when the application
> goes to background. So that's what I'm trying to compile the DB Library
> with latest version. Maybe I'm missing something because I'm very new in
> c++, I've been using dragonbones in javascript with createjs (which is
> great!).
> 
> Also this was asked in the cocos2dx forum
> http://discuss.cocos2d-x.org/t/cocos2d-x-3-x-with-dragonbones/14953
> 
> Anyway, thanks for your time!
> 
> —
> Reply to this email directly or view it on GitHub
> https://github.com/DragonBones/DragonBonesCPP/issues/16#issuecomment-47737598
> .

 Comment 3: Thanks moremorefun! I've tried and I've failed miserably hahahaha! So I'll wait until a more stable cocos2d-x-3x dragonbones version comes out!

 Comment 4: check this repository https://github.com/moremorefun/dbsample.
I just make it pass win32 and android compile.

2014-07-03 0:07 GMT+08:00 klanco holmesdebra@example.com:

> Thanks moremorefun! I've tried and I've failed miserably hahahaha! So I'll
> wait until a more stable cocos2d-x-3x version comes out!
> 
> —
> Reply to this email directly or view it on GitHub
> https://github.com/DragonBones/DragonBonesCPP/issues/16#issuecomment-47796663
> .

 Comment 5: Alright thanks! I'll check it out!

 Comment 6: I have added android and ios_mac project in cocos2d-x-3.x demo.
See #40 .

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