Add composer validation to CI;

Also: add branch alias for `dev-master`

Fix #159

.travis.yml

@@ -8,6 +8,7 @@ php:
   - 5.5
 
 script:
+  - composer validate
   - phpunit --version
   - phpunit --configuration tests/phpunit.xml
 

composer.json

@@ -40,6 +40,11 @@
     "suggest": {
         "illuminate/support": "Fluent array interface for map functions"
     },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0.x-dev"
+        }
+    },
     "support": {
         "issues": "https://github.com/parsecsv/parsecsv-for-php/issues",
         "source": "https://github.com/parsecsv/parsecsv-for-php"