ci(travis): update semantic-release to 6.3.5 and update travis config

Semantic 6.3.5 features a smaller config footprint. This updates our travis config to the new

version.

Closes #390

Author: jimthedev

.travis.yml

@@ -21,13 +21,10 @@ before_install:
 before_script:
 - npm prune
 - git version
-- curl -Lo travis_after_all.py https://git.io/vLSON
 script:
 - npm run test
 - npm run check-coverage
 after_success:
-- python travis_after_all.py
-- export $(cat .to_export_back)
 - npm run report-coverage
 - npm run test:windows
 - npm run semantic-release

package.json

@@ -61,7 +61,7 @@
     "nodemon": "1.11.0",
     "nyc": "10.0.0",
     "proxyquire": "1.7.10",
-    "semantic-release": "4.3.5",
+    "semantic-release": "6.3.5",
     "semver": "5.3.0",
     "sinon": "1.17.6"
   },