CB-11795 Add 'protective' entry to cordovaDependencies

The entry is required to protect end-users from fetching edge versions of the plugin by incompatible version of cordova. This also assumes that we will not introduce any regressions in compatibility w/ cordova in minor and patch releases. On every major release we will need to add similar entry with _next_ major version.

 This closes #113

package.json

@@ -46,6 +46,9 @@
       "4.0.0": {
         "cordova-android": ">=3.6.0",
         "cordova-windows": ">=4.4.0"
+      },
+      "5.0.0": {
+        "cordova": ">100"
       }
     }
   },