some tests and initial json structure

cmd/test2/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+
+	excelize "github.com/360EntSecGroup-Skylar/excelize/v2"
+)
+
+func main() {
+	xFile, err := excelize.OpenFile("../../test/gwb-rechner_5_0_4_vollbilanz.xlsx")
+	fmt.Println("openFile err :", err)
+	sheets := xFile.GetSheetMap()
+	rows, _ := xFile.GetRows(sheets[4])
+	fmt.Printf("%#v", rows)
+}