kktec/gsheets — pull request #13 by timyates (2014-01-10 12:28:07+00:00)
Title: Reset nextRowNum when adding a new sheet

If you do:

```groovy
@Grab( 'org.gsheets.kktec:gsheets:0.3.2a' )
import org.gsheets.building.*

def map = [ a:[ [ 1, 2, 3 ], [ 4, 5, 6 ] ],
b:[ [ 7, 8, 9 ], [ 10, 11, 12 ] ] ]

new WorkbookBuilder( true ).with { wb ->
def book = wb.workbook {
map.each { name, values ->
sheet( name ) {
values.each {
row( it )
}
}
}
}
new File( '/tmp/test.xlsx' ).withOutputStream { os ->
book.write( os )
}
}
```

When you open `/tmp/test.xlsx`, you'll notice that the rows for sheet #2 (called `b`) start at row `3` in Excell