Updating for PHP 7.2; Fixing tabs in composer.json

.travis.yml

@@ -2,6 +2,7 @@ language: php
 php:
   - 7.0
   - 7.1
+  - 7.2
 before_script:
   - composer install
 script: vendor/bin/phpunit

composer.json

@@ -1,5 +1,5 @@
 {
-	"name": "rncryptor/rncryptor",
+    "name": "rncryptor/rncryptor",
     "type": "library",
     "description": "PHP implementation of RNCryptor",
     "keywords": ["encryption", "crypto", "rncryptor"],
@@ -20,12 +20,12 @@
         }
     ],
     "require": {
-		"php": ">=7.0 <7.2",
-		"ext-openssl": "*"
-	},
+        "php": ">=7.0",
+        "ext-openssl": "*"
+    },
     "require-dev": {
-		"rncryptor/spec": "~4.0",
-		"phpunit/phpunit": "~6.0",
+        "rncryptor/spec": "~4.0",
+        "phpunit/phpunit": "~6.0",
         "squizlabs/php_codesniffer": "^2.8"
     },
     "autoload": {