build ffmpeg with libvpx
build for ffprobe
add x264 source (snapshot-20140501-2245)
add x264 support
rename to build_all_codecs
rename to ffmpeg-all-codecs.js
remove old, non asm.js ffmpeg
build script updates
move to build_lgpl.sh
gitignore
rename output file in build script
add basic test
rebuild
update test
demo command update
Merge branch 'buildchanges'