[ci] run Pkg.test with coverage

Author: sjkelly

.travis.yml

@@ -7,6 +7,8 @@ julia:
   - nightly
 notifications:
   email: false
+script:
+    - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
+    - julia -e 'Pkg.clone(pwd()); Pkg.build("FileIO"); Pkg.test("FileIO"; coverage=true)'
 after_success:
-- julia -e 'cd(Pkg.dir("FileIO")); Pkg.add("Coverage")'
-- julia -e 'using Coverage; Coveralls.submit(Coveralls.process_folder()); Codecov.submit(process_folder())'
+  - julia -e 'cd(Pkg.dir("FileIO")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder()); Codecov.submit(process_folder())'