Start collecting coverage data in CI (loris-imageserver#325)

Author: alexwlchan

.coveragerc

@@ -0,0 +1,7 @@
+[run]
+branch = True
+include =
+    loris/*.py
+
+[report]
+show_missing = True

.gitignore

@@ -31,3 +31,5 @@ xb526qv4524_05_0001.jp2
 todo.md
 
 .hypothesis
+
+.coverage

.travis.yml

@@ -23,7 +23,9 @@ install:
  - pip install -r requirements.txt
  - pip install -r requirements_test.txt
 
-script: "python test.py"
+script:
+  - "coverage run ./test.py"
+  - "coverage report"
 
 notifications:
   email:

requirements_test.txt

@@ -1 +1,2 @@
+coverage==4.4.1
 hypothesis >= 3.11.6