Restructure examples folder (#47)

Split examples into separate markdown files, each containing a description, sample code, and a screenshot of the resulting xlsx document.

The script `generate.rb` is provided to actually generate the example documents by executing the sample code contained in the markdown files.

1 files changed, 35 insertions, 0 deletions

diff --git a/examples/locked_image_example.md b/examples/locked_image_example.md
new file mode 100644
index 00000000..b0fed85b
--- /dev/null
+++ b/examples/locked_image_example.md
@@ -0,0 +1,35 @@
+## Description
+
+Images could have a lot of restrictions.
+
+* noGrp
+* noSelect - disable selection
+* noRot - disable rotation
+* noChangeAspect (default true) - disable aspect change
+* noMove - disable move
+* noResize - disable resize
+* noEditPoints
+* noAdjustHandles
+* noChangeArrowheads
+* noChangeShapeType
+
+## Code
+
+```ruby
+require 'axlsx'
+
+p = Axlsx::Package.new
+wb = p.workbook
+
+image = File.expand_path('assets/image1.jpeg')
+
+wb.add_worksheet(name: 'Image') do |sheet|
+  sheet.add_image(image_src: image, start_at: 'B2', width: 300, height: 300, noRot: true)
+end
+
+p.serialize 'locked_image_example.xlsx'
+```
+
+## Output
+
+![Output](images/locked_image_example.png "Output")