Fixed error, if the number of items is less than remain,when start props is setted, it would appear unexpected blank.

YoungSx · YoungSx · commit f6954a93ffdc · 2017-07-03T15:44:46.000+08:00
diff --git a/index.js b/index.js
@@ -66,7 +66,7 @@
                 }
 
                 delta.end = end
-                delta.start = start
+                if (start >= this.remain) delta.start = start
 
                 this.$forceUpdate()
                 Vue2.nextTick(this.setScrollTop.bind(this, scrollTop))

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@`
`66`	`66`	`}`
`67`	`67`
`68`	`68`	`delta.end = end`
`69`		`- delta.start = start`
	`69`	`+ if (start >= this.remain) delta.start = start`
`70`	`70`
`71`	`71`	`this.$forceUpdate()`
`72`	`72`	`Vue2.nextTick(this.setScrollTop.bind(this, scrollTop))`