Enable delay from command line.
Update spec files.
Create shell script for delay test.
If command line arguments is "1.png 100 2.png 200 3.png 300", 1.png delay is 100, 2.png delay is 200 and 3.png delay is 300.
Merge pull request #16 from apngasm/debug

confirmed fix for delay arguments per frame and global --delay specifier argument