Update v1.0.6

vendor/guzzlehttp/psr7/.travis.yml

@@ -0,0 +1,20 @@
+language: php
+
+php:
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - hhvm
+
+sudo: false
+
+install:
+  - travis_retry composer install --no-interaction --prefer-source
+
+script: make test
+
+matrix:
+  allow_failures:
+    - php: hhvm
+  fast_finish: true