🐛 Fixing package.json engines & repo URL

no issue

- semver caret ranges don't apply pre-1.0.0, therefore we need to use a more explicit range
- repo URL should be a valid url

package.json

@@ -4,7 +4,7 @@
     "demo": "https://demo.ghost.io",
     "version": "1.3.2",
     "engines": {
-        "ghost": "^0.9.0"
+        "ghost": ">=0.9.0 <1.0.0"
     },
     "license": "MIT",
     "screenshots": {
@@ -29,7 +29,7 @@
     ],
     "repository": {
         "type": "git",
-        "url": "git://github.com/TryGhost/Casper.git"
+        "url": "https://github.com/TryGhost/Casper.git"
     },
     "bugs": "https://github.com/TryGhost/Casper/issues",
     "contributors": "https://github.com/TryGhost/Casper/graphs/contributors"