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, 34 insertions, 0 deletions

diff --git a/examples/column_widths_example.md b/examples/column_widths_example.md
new file mode 100644
index 00000000..5d94090d
--- /dev/null
+++ b/examples/column_widths_example.md
@@ -0,0 +1,34 @@
+## Description
+
+You can set the column widths
+
+## Code
+
+```ruby
+require 'axlsx'
+
+p = Axlsx::Package.new
+wb = p.workbook
+
+wb.add_worksheet(name: 'Column widths') do |sheet|
+  sheet.add_row [
+    'I use autowidth and am very wide',
+    'I use a custom width and am narrow'
+  ]
+
+  sheet.add_row [
+    'abcdefg',
+    'This is a very long text and should flow into the right cell',
+    nil,
+    'xxx'
+  ]
+
+  sheet.column_widths nil, 3, 5, nil
+end
+
+p.serialize 'column_widths_example.xlsx'
+```
+
+## Output
+
+![Output](images/column_widths_example.png "Output")