circle: add config types

circle.md

@@ -0,0 +1,14 @@
+---
+title: CircleCI
+---
+
+## circle.yml
+
+* __machine__: adjusting the VM to your preferences and requirements
+* __checkout__: checking out and cloning your git repo
+* __dependencies__: setting up your project's language-specific dependencies
+* __database__: preparing the databases for your tests
+* __test__: running your tests
+* __deployment__: deploying your code to your web servers
+
+See: <https://circleci.com/docs/configuration>