corrected type "Vector" to "vector".
add CMakeLists.txt
fix bugs temporarily
create apngframe file and libapngasm cpp.
Merge remote-tracking branch 'soga/master'

Conflicts:
	src/libapngasm.h
corrected compile errors.
edit CMakeLists.txt

you can build the shared lib for cmake
assemble method is const.
edit libapngasm.h

FILE type is required to include header of <cstdio> or <stdio.h>
change output directories for each files
add comments
Merge remote-tracking branch 'torakichi/master'
fixed gitignore