添加了SVM分类的很多内容，但结构仍然需要梳理
SVM基本搞定，但执行代码时开辟线程有问题。
基本搞定SVM算法的多线程问题。
I don't want to code today
I wan't make some change
hava a rest
s
need one more step --- progress dialog
I'm on progress bar
Now I want to leave it alone, and learn some Qt skills
nothing changed
just add feature class
Add some classes

learn from qgis0.0.11, add some classes into the project.. Now the
program can run properly
add some stand alone classes
Create README.md
add GRMapCanvas class

this class now is for vector features, will add functions for raster
layers soon.
Merge remote-tracking branch 'origin/feature' into feature
添加了SVM分类的很多内容，但结构仍然需要梳理
SVM基本搞定，但执行代码时开辟线程有问题。
基本搞定SVM算法的多线程问题。