Added test case in order to reproduce issue #10 and relative fix

Author: mariotsi

.eslintrc.json

@@ -14,6 +14,7 @@
     "max-len": [
       1,
       120
-    ]
+    ],
+    "no-console":"warn"
   }
 }

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Launch Program",
+      "program": "${workspaceFolder}/src/Parser.js",
+      "runtimeExecutable": "/Users/simonemariotti/.nvm/versions/node/v8.6.0/bin/node"
+    }
+  ]
+}

src/data/DeviceModels.js

@@ -197,8 +197,18 @@ class DeviceModels {
           if (DeviceModels.hasMatch(v, model)) {
             if (v) {
               if (v.endsWith('!!')) {
+                if (!list[v]) {
+                  if (!list[originalV]) {
+                    if (list[DeviceModels.getKey(v)]) {
+                      v = DeviceModels.getKey(v);
+                    } else if (list[DeviceModels.getKey(originalV)]) {
+                      v = DeviceModels.getKey(originalV);
+                    }
+                  }
+                }
+
                 for (let m2 of Object.keys(list[v] || list[originalV])) {
-                  const v2 = list[v][m2];
+                  const v2 = (list[v] || list[originalV])[m2];
                   if (DeviceModels.hasMatch(m2, model)) {
                     match = v2;
                     pattern = m2;
@@ -300,6 +310,17 @@ class DeviceModels {
     return `${pattern}`.replace('(?i)', '').replace('\\-', '-');
   }
 
+  /**
+   * Make the pattern compatible with JavaScript key, remove something like O\+ and tranform it to O+
+   *
+   * @param {string} pattern
+   *
+   * @return {string}
+   */
+  static getKey(pattern) {
+    return `${pattern}`.replace('\\', '');
+  }
+
   /**
    *
    * @param {string} s

test/data/mobile/browser-other.yaml

@@ -10,3 +10,7 @@
     headers: 'User-Agent: Prince/7.1 (http://www.princexml.com)'
     readable: 'Prince 7.1'
     result: { browser: { name: Prince, version: '7.1', type: browser } }
+-
+    headers: 'User-Agent: Mozilla/5.0 (Linux; U; Android 4.1.1; en-us; O+ 8.36 Android Build/Oplus8.36_Oplus) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30'
+    readable: 'Android Browser on an O+ 8.36 Android running Android 4.1.1'
+    result: { browser: { name: Android Browser }, device: { model: "O+ 8.36 Android", type: "mobile", subtype: "smart"}, engine: { name: Webkit, version: '534.30'}, os: { name: Android, version: 4.1.1 } }