wip, moving code
added version generator and some reorganization
Save extracted info to self.
Create empty apnghelper.
Create namespace "apngasm".
Delete "using namespace std;" from "apngframe.h".
Add include <string> and <vector> to "apngasm.h" file.
Clean header.
Add apnghelper to compile file list.
Rename fields.
Rename methods.
Rename fields.
Move savePNG method to private.
Check animation spec file extension.
Call spec file process.
Merge pull request #7 from apngasm/refactor

Refactor