Fix file extensions

diff --git a/basics.md b/basics.mdwn
similarity index 100%
rename from basics.md
rename to basics.mdwn

diff --git a/debian-build b/bin/debian-build
similarity index 100%
rename from debian-build
rename to bin/debian-build

diff --git a/debian-dev-setup b/bin/debian-dev-setup
similarity index 100%
rename from debian-dev-setup
rename to bin/debian-dev-setup

diff --git a/debian-keyring-setup b/bin/debian-keyring-setup
similarity index 100%
rename from debian-keyring-setup
rename to bin/debian-keyring-setup

diff --git a/checking.md b/checking.mdwn
similarity index 100%
rename from checking.md
rename to checking.mdwn

diff --git a/leap.md b/leap.mdwn
similarity index 100%
rename from leap.md
rename to leap.mdwn

diff --git a/python.md b/python.mdwn
similarity index 100%
rename from python.md
rename to python.mdwn

diff --git a/references.md b/references.mdwn
similarity index 100%
rename from references.md
rename to references.mdwn

diff --git a/ruby.md b/ruby.mdwn
similarity index 100%
rename from ruby.md
rename to ruby.mdwn

diff --git a/TODO.md b/todo.mdwn
similarity index 100%
rename from TODO.md
rename to todo.mdwn