diff --git a/README.md b/README.md
index 1dc9017..fd40dda 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,37 @@
-# ROT
-ROT algorithm application in java
+## Welcome to GitHub Pages
+
+You can use the [editor on GitHub](https://github.com/danog/ROT/edit/master/README.md) to maintain and preview the content for your website in Markdown files.
+
+Whenever you commit to this repository, GitHub Pages will run [Jekyll](https://jekyllrb.com/) to rebuild the pages in your site, from the content in your Markdown files.
+
+### Markdown
+
+Markdown is a lightweight and easy-to-use syntax for styling your writing. It includes conventions for
+
+```markdown
+Syntax highlighted code block
+
+# Header 1
+## Header 2
+### Header 3
+
+- Bulleted
+- List
+
+1. Numbered
+2. List
+
+**Bold** and _Italic_ and `Code` text
+
+[Link](url) and ![Image](src)
+```
+
+For more details see [GitHub Flavored Markdown](https://guides.github.com/features/mastering-markdown/).
+
+### Jekyll Themes
+
+Your Pages site will use the layout and styles from the Jekyll theme you have selected in your [repository settings](https://github.com/danog/ROT/settings). The name of this theme is saved in the Jekyll `_config.yml` configuration file.
+
+### Support or Contact
+
+Having trouble with Pages? Check out our [documentation](https://help.github.com/categories/github-pages-basics/) or [contact support](https://github.com/contact) and we’ll help you sort it out.
diff --git a/_config.yml b/_config.yml
new file mode 100644
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--- /dev/null
+++ b/_config.yml
@@ -0,0 +1 @@
+theme: jekyll-theme-cayman
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