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, 47 insertions, 0 deletions

diff --git a/examples/print_settings_example.md b/examples/print_settings_example.md
new file mode 100644
index 00000000..ab536082
--- /dev/null
+++ b/examples/print_settings_example.md
@@ -0,0 +1,47 @@
+## Description
+
+You could change the page settings for printing.
+
+## Code
+
+```ruby
+require 'axlsx'
+
+p = Axlsx::Package.new
+wb = p.workbook
+
+margins = {
+  left: 3,
+  right: 3,
+  top: 1.2,
+  bottom: 1.2,
+  header: 0.7,
+  footer: 0.7
+}
+
+setup = {
+  fit_to_width: 1,
+  orientation: :landscape,
+  paper_width: '297mm',
+  paper_height: '210mm'
+}
+
+options = {
+  grid_lines: true,
+  headings: true,
+  horizontal_centered: true
+}
+
+wb.add_worksheet(name: 'Print settings',
+                 page_margins: margins,
+                 page_setup: setup,
+                 print_options: options) do |sheet|
+  sheet.add_row ['this sheet uses customized print settings']
+end
+
+p.serialize 'print_settings_example.xlsx'
+```
+
+## Output
+
+![Output](images/print_settings_example.png "Output")