updated with scratch for boost program_options
updated for argument ideas
added animation directive file arg
Update README.md
scratch for processing options
small fixes, still wip
implemented disassemble()
Merge remote-tracking branch 'origin/maxstepin-disassemble' into boost

Conflicts:
	src/apngasm-cli.cpp
fixed get filename
Merge pull request #3 from yusuke1207a/cli

fixed get filename
WIP
WIP get outputFilePass
WIP convert fraction into milliseconds
convert complex fraction into milliseconds
WIP get delay time, added error message, and bug fix
redesigned parseDelay() -> parseFrameLength()
extracted description from main() to getDescription()
extracted program-options' settings & parsing, apngasm-cli.cpp -> options.cpp
Command Line Interface

- extract CLI process, apngasm-cli.cpp -> cli.*
- multiple_untyped_value support
- added options. `--disassemble', `--output', etc...
Merge pull request #5 from kagilinn/toshiya

Large re-factoring and implementation of for the CLI by intern Yoshida.