Add method for creating empty spreadsheet

.gitignore

@@ -1 +1,2 @@
 *.swp
+.idea

client.go

@@ -49,26 +49,35 @@ func (c *Client) ListFiles(query string) ([]*drive.File, error) {
 
 func (c *Client) CreateSpreadsheetFromTsv(title string, reader io.Reader) (*Spreadsheet, error) {
  arr := TsvToArr(reader, "\t")
- return c.CreateSpreadsheet(title, arr)
+ return c.CreateSpreadsheetWithData(title, arr)
 }
 
 func (c *Client) CreateSpreadsheetFromCsv(title string, reader io.Reader, delimiter string) (*Spreadsheet, error) {
  arr := TsvToArr(reader, delimiter)
- return c.CreateSpreadsheet(title, arr)
+ return c.CreateSpreadsheetWithData(title, arr)
 }
 
-func (c *Client) CreateSpreadsheet(title string, data [][]string) (*Spreadsheet, error) {
- ssProps := &sheets.Spreadsheet{
- Properties: &sheets.SpreadsheetProperties{Title: title},
- }
- ssInfo, err := c.Sheets.Spreadsheets.Create(ssProps).Do()
- if err != nil {
- return nil, err
- }
+func (c *Client) CreateSpreadsheet(title string) (*Spreadsheet, error) {
+ ssProps := &sheets.Spreadsheet{
+ Properties: &sheets.SpreadsheetProperties{Title: title},
+ }
+ ssInfo, err := c.Sheets.Spreadsheets.Create(ssProps).Do()
+ if err != nil {
+ return nil, err
+ }
+
+ ss := &Spreadsheet{
+ Client: c,
+ Spreadsheet: ssInfo,
+ }
 
- ss := &Spreadsheet{
- Client: c,
- Spreadsheet: ssInfo,
+ return ss, nil
+}
+
+func (c *Client) CreateSpreadsheetWithData(title string, data [][]string) (*Spreadsheet, error) {
+ ss, err := c.CreateSpreadsheet(title)
+ if err != nil {
+ return nil, err
  }
 
  sheetname := "Sheet1"