Use specific Laravel version

We wont know if this package will break in Laravel 5.3. Laravel doesn't follow SemVer. This way we can get ahead of future problems.

This closes dingo#961

Author: vinkla

composer.json

@@ -11,8 +11,8 @@
     ],
     "require": {
         "php": "^5.5.9 || ^7.0",
-        "illuminate/routing": "~5.1",
-        "illuminate/support": "~5.1",
+        "illuminate/routing": "5.1.* || 5.2.*",
+        "illuminate/support": "5.1.* || 5.2.*",
         "dingo/blueprint": "0.1.*",
         "league/fractal": ">=0.12.0",
         "doctrine/annotations": "1.2.*",
@@ -21,15 +21,15 @@
     "require-dev": {
         "lucadegasperi/oauth2-server-laravel": "5.0.*",
         "tymon/jwt-auth": "1.0.*",
-        "laravel/lumen-framework": "~5.1",
-        "illuminate/auth": "~5.1",
-        "illuminate/cache": "~5.1",
-        "illuminate/events": "~5.1",
-        "illuminate/database": "~5.1",
-        "illuminate/pagination": "~5.1",
-        "illuminate/console": "~5.1",
-        "illuminate/filesystem": "~5.1",
-        "illuminate/log": "~5.1",
+        "laravel/lumen-framework": "5.1.* || 5.2.*",
+        "illuminate/auth": "5.1.* || 5.2.*",
+        "illuminate/cache": "5.1.* || 5.2.*",
+        "illuminate/events": "5.1.* || 5.2.*",
+        "illuminate/database": "5.1.* || 5.2.*",
+        "illuminate/pagination": "5.1.* || 5.2.*",
+        "illuminate/console": "5.1.* || 5.2.*",
+        "illuminate/filesystem": "5.1.* || 5.2.*",
+        "illuminate/log": "5.1.* || 5.2.*",
         "phpunit/phpunit": "^4.8 || ^5.0",
         "mockery/mockery": "~0.9",
         "squizlabs/php_codesniffer": "~2.0"