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, 28 insertions, 0 deletions

diff --git a/examples/repeated_header_example.md b/examples/repeated_header_example.md
new file mode 100644
index 00000000..f4caf2e2
--- /dev/null
+++ b/examples/repeated_header_example.md
@@ -0,0 +1,28 @@
+## Description
+
+Repeat headers on print layout
+
+## Code
+
+```ruby
+require 'axlsx'
+
+p = Axlsx::Package.new
+wb = p.workbook
+
+wb.add_worksheet(name: 'Repeated header') do |sheet|
+  sheet.add_row ['This', 'Column', 'Header', 'Will', 'Render', 'On', 'Every', 'Printed', 'Sheet']
+
+  200.times do
+    sheet.add_row [1, 2, 3, 4, 5, 6, 7, 8]
+  end
+
+  wb.add_defined_name("'repeated header'!$1:$1", local_sheet_id: sheet.index, name: '_xlnm.Print_Titles')
+end
+
+p.serialize 'repeated_header_example.xlsx'
+```
+
+## Output
+
+![Output](images/repeated_header_example.png "Output")