Change example project, fix Table.RemoveColumn null reference exception.

DocX/Table.cs

             if (index < 0 || index > columnCount - 1)
                 throw new IndexOutOfRangeException();
 
-            foreach (Row r in rows)
+            foreach (Row r in Rows)
                 r.Cells[index].Xml.Remove();
         }
 
                 rows = (from r in Xml.Elements(XName.Get("tr", DocX.w.NamespaceName))
                         select new Row(this, Document, r)).ToList();
 
-                rowCount = rows.Count;
+                rowCount = Rows.Count;
 
                 if (rows.Count > 0)
                     if (rows[0].Cells.Count > 0)

Examples/Examples.csproj

   </ItemGroup>
   <ItemGroup>
     <None Include="bin\Debug\docs\Input.docx" />
+    <None Include="Input.docx">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

Examples/Program.cs

             const string str = "Hello World";
 
             // Open the document Input.docx.
-            using (DocX document = DocX.Load(@"docs\Input.docx"))
+            using (DocX document = DocX.Load(@"Input.docx"))
             {
                 // Make sure this document has at least one Image.
                 if (document.Images.Count() > 0)