Modify markdown for Github formatting

diff --git a/createoverlay.md b/createoverlay.md
index 5082718dfa12d6f6eba118a225e46c3c83cdea05..063628f30bc106ac1a037d823960b2421610e774 100644 (file)
--- a/createoverlay.md
+++ b/createoverlay.md
@@ -93,6 +93,7 @@ Multiple `--gridline` options can be specified, although note they'll typically
 `griddimensions`sets the dimensions of the grid, as number of columns and rows. One of the axis can be zero if desired, creating only rows or columns.\r
 \r
 Each column/row is demarcated by vertical and horizontal lines, so the number of lines will be  the column/row values minus 1. For example, here is a `--gridline 4x4`\r
+<br clear="all">\r
 ![4x4 Gridline with 3 lines on each axis](https://photos.smugmug.com/photos/i-CjBJhH3/0/KTr95dS96C2QR3RHrT5wLH8spZDzfd3MVz2tFLd8d/S/i-CjBJhH3-S.png)\r
 Note there are three horizontal and vertical lines, creating 4 columns and 4 rows.\r
 \r