Try getting coverage to wokr

.coveragerc

@@ -0,0 +1,13 @@
+[run]
+branch = True
+source = npyi
+
+[report]
+exclude_lines =
+    if self.debug:
+    pragma: no cover
+    raise NotImplementedError
+    if __name__ == .__main__.:
+ignore_errors = True
+omit =
+    tests/*

.travis.yml

@@ -1,10 +1,8 @@
 dist: xenial
 language: python
 cache: pip
-env:
-    secure: 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
 before_install:
-- pip install -U tox
+- pip install -U tox codecov
 notifications:
   on_success: change
   on_failure: always
@@ -21,4 +19,5 @@ matrix:
   - python: 3.6
     env: TOXENV=flake8
 script: tox
-after_success: codecov
+after_success:
+  - codecov

tox.ini

@@ -10,10 +10,8 @@ envlist = flake8, py27, py34, py35, py36
 deps =
     requests
     pytest
-    codecov
 commands =
     pytest
-    codecov
 
 [testenv:flake8]
 basepython = python3