Generate password when hitting Enter

fix https://github.com/lesspass/lesspass/issues/141

src/components/MasterPassword.vue

@@ -12,7 +12,8 @@
                autocorrect="off"
                autocapitalize="off"
                v-model="password"
-               v-on:input="updatePassword($event.target.value)">
+               v-on:input="updatePassword($event.target.value)"
+               v-on:keyup.enter="triggerEnterMethod">
         <fingerprint v-bind:fingerprint="fingerprint" v-on:click.native="togglePasswordType($refs.password)">
         </fingerprint>
     </div>
@@ -23,9 +24,9 @@
 
     export default {
         components: {
-            Fingerprint,
+            Fingerprint
         },
-        props: ['value'],
+        props: ['value', 'keyupEnter'],
         data(){
             return {
                 fingerprint: '',
@@ -53,6 +54,11 @@
                 } else {
                     element.type = 'password';
                 }
+            },
+            triggerEnterMethod(){
+                if (typeof this.keyupEnter !== undefined) {
+                    this.keyupEnter()
+                }
             }
         }
     }

src/views/PasswordGenerator.vue

@@ -71,7 +71,7 @@
             </div>
         </div>
         <div class="form-group">
-            <master-password v-model="masterPassword"></master-password>
+            <master-password v-model="masterPassword" :keyupEnter="generatePassword"></master-password>
         </div>
         <div class="form-group row">
             <div class="col-9" v-show="generatedPassword">
@@ -140,7 +140,9 @@
         </div>
         <div class="form-group row" v-if="showOptions">
             <div class="col-6 col-sm-4">
-                <label for="passwordLength"><small>Length</small></label>
+                <label for="passwordLength">
+                    <small>Length</small>
+                </label>
                 <div class="input-group input-group-sm">
                     <span class="input-group-btn" v-on:click.prevent="decrementPasswordLength">
                     <button class="btn btn-secondary" type="button" tabindex="-1">
@@ -157,7 +159,9 @@
                 </div>
             </div>
             <div class="col-6 col-sm-4">
-                <label for="passwordCounter"><small>Counter</small></label>
+                <label for="passwordCounter">
+                    <small>Counter</small>
+                </label>
                 <div class="input-group input-group-sm">
                     <span class="input-group-btn" v-on:click.prevent="decrementCounter">
                     <button class="btn btn-secondary" type="button" tabindex="-1">