Add subfolders support

Author: olexale

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [0.5.0] - Subfolders
+
+* Now it's possible to have subfolders in the `step` folder
+
 ## [0.1.7] - Internal release
 
 * Use `extra_pedantic` 

example/README.md

@@ -1,4 +1,4 @@
-Create a `*.feature` file in you lib folder. The minimal file might be:
+Create a `*.feature` file in the `test` folder. The minimal file might be:
 ```
 Feature: Counter
     Scenario: Initial counter value is 0