entries: added time entries feature description & test implementation

Author: phiros

tests/features/entries.feature

@@ -0,0 +1,41 @@
+Feature: entries
+  In order to use mite in a sane manner
+  As a mite user
+  I need to be able to add, remove, edit and list time entries
+
+  Scenario: list entries
+    Given  A local mock server is setup for the http method "GET" and path "/time_entries.json" which returns:
+      """
+      [
+        {
+          "time_entry": {
+            "id": 36159117,
+            "minutes": 15,
+            "date_at": "2015-10-16",
+            "note": "Feedback einarbeiten",
+            "billable": true,
+            "locked": false,
+            "revenue": null,
+            "hourly_rate": 0,
+            "user_id": 211,
+            "user_name": "Fridolin Frei",
+            "project_id": 88309,
+            "project_name": "API v2",
+            "customer_id": 3213,
+            "customer_name": "König",
+            "service_id": 12984,
+            "service_name": "Entwurf",
+            "created_at": "2015-10-16T12:39:00+02:00",
+            "updated_at": "2015-10-16T12:39:00+02:00"
+          }
+        }
+      ]
+      """
+    And Mite is setup to connect to this mock server
+    Then "-c .mite.toml entries" should return the following:
+      """
+      id        notes                 date        time  project  service
+      --        -----                 ----        ----  -------  -------
+      36159117  Feedback einarbeiten  2015-10-16  15m   API v2   Entwurf
+
+      """