bug in simplechart.js

[leonwxqian]

In simplechart.js
if(value < min) {
min = value;
} else if(value > max) {
max = value;
}

should be:
if(value < min) {
min = value;
}
if(value > max) {
max = value;
}

Otherwise data like
var data = {
"2014-01-01": 1116,
"2014-01-02": 12,
}

will not get corret max value (y axis).