Update the documentation and add the PDF version of the documentation

Author: traf72

Docs/Tutorial.docx

@@ -294,7 +294,7 @@ public void TestGroupResultVertical_WithoutGroupingBlankValues()
             Substitute.For<ITemplateProcessor>())
         {
             GroupBy = "1,2, 3 , 4,5,6",
-            GroupBlankValues = false
+            GroupBlankCells = false
         };
 
         var method = panel.GetType().GetMethod("GroupResult", BindingFlags.Instance | BindingFlags.NonPublic);
@@ -488,7 +488,7 @@ public void TestGroupResultHorizontal_WithoutGroupingBlankValues()
             Substitute.For<ITemplateProcessor>())
         {
             GroupBy = "1,2, 3 , 4,5,6",
-            GroupBlankValues = false,
+            GroupBlankCells = false,
             Type = PanelType.Horizontal
         };
 

Docs/Tutorial.pdf

@@ -38,7 +38,7 @@ public ExcelDataSourcePanel(object data, IXLNamedRange namedRange, object report
     public string GroupBy { get; set; }
 
     [ExternalProperty]
-    public bool GroupBlankValues { get; set; } = true;
+    public bool GroupBlankCells { get; set; } = true;
 
     [ExternalProperty]
     public string BeforeDataItemRenderMethodName { get; set; }
@@ -180,7 +180,7 @@ private void GroupCellsVertical(IXLRange range, int[] groupColNumbers)
 
                 void MergeCellsWithSameValue(int rowNumber)
                 {
-                    if (!previousResult.StartCellValue.IsBlank || GroupBlankValues)
+                    if (!previousResult.StartCellValue.IsBlank || GroupBlankCells)
                     {
                         range.Range(previousResult.StartRowNum, colNum, rowNumber, colNum).Merge();
                     }
@@ -221,7 +221,7 @@ private void GroupCellsHorizontal(IXLRange range, int[] groupRowNumbers)
 
                 void MergeCellsWithSameValue(int columnNum)
                 {
-                    if (!previousResult.StartCellValue.IsBlank || GroupBlankValues)
+                    if (!previousResult.StartCellValue.IsBlank || GroupBlankCells)
                     {
                         range.Range(rowNum, previousResult.StartColNum, rowNum, columnNum).Merge();
                     }