Add rectangle polygon and texture mapping with ortho projection
1: Add rectangle type polygon (hasRectangle) used to evaluate
image processing algorithms eventually.
2: Change the presentation of configuration which indicate the current
rendering status.
3: Chnage the default loadded texture file as DeserTreeCloud.png.
    TODO: Will be replaced by the method which was specified by program
    argument while launch the program.
4: Little refactor of some if-else conditions. Actually i don't like this
style of program, will be removed if-else condition soon or later as
possibe as i can.
5: Add ortho projection matrix(Must combine used with screen coord)
6: Add more sanity control option
7: Add the file which can indicate vairous combination of rendering