helper: toAbbr

#### toAbbr
_Returns the number in abbreviation formats based on a value. The number is rounded to a particular decimal place._
<br>Parameters: digits `int` - The number of digits to appear after the decimal point. (Optional)
Default: `2`

``` js
// Data
value = 123456789
```

``` html
// Template
{{toAbbr value}}

// Result:
123.457m
```