impl: double jump
Merge pull request #4 from bitterfox/double_jump

impl: double jump
add input.js
Merge pull request #7 from programmerMOT/input_js

add input.js
refactoring

delete comment
delete console.log
Merge pull request #8 from programmerMOT/0204_mot_refactoring

refactoring
using Constant value instead of Hardcoding
using reset function
change operator
fix scope difference bug
implement scroll speed changing
速度が負にならないように
now Util.Random.rand() return 0~2^32-1
use "src" directory instead of root