Move example to dev-example folder

Remove watcher from FormWizard component to avoid double beforeChange trigger
Code cleanup

dev-example/App.vue

@@ -0,0 +1,85 @@
+<template>
+  <div>
+    <form-wizard @on-complete="onComplete"
+                 shape="circle"
+                 color="#e74c3c"
+                 @on-loading="setLoading"
+                 class="card">
+      <tab-content title="Personal details"
+                   :before-change="validateAsync"
+                   icon="ti-user">
+        My first tab content
+      </tab-content>
+      <tab-content title="Additional Info"
+                   :before-change="validate"
+                   icon="ti-settings">
+        My second tab content
+      </tab-content>
+      <tab-content title="Last step"
+                   icon="ti-check">
+        Yuhuuu! This seems pretty damn simple
+      </tab-content>
+      <div class="loader" v-if="loadingWizard"></div>
+    </form-wizard>
+  </div>
+</template>
+
+<script>
+
+  export default {
+    name: 'app',
+    data () {
+      return {
+        loadingWizard: false
+      }
+    },
+    methods: {
+      onComplete () {
+        alert('Yay!')
+      },
+      setLoading (value) {
+        this.loadingWizard = value
+      },
+      validateAsync () {
+        return new Promise((resolve, reject) => {
+          setTimeout(() => {
+            resolve(true)
+          }, 1000)
+        })
+      },
+      validate () {
+        return true
+      }
+    }
+  }
+</script>
+<style>
+  @import "loader.css";
+</style>
+<style lang="scss">
+  $border-radius-extreme: 6px !default;
+  $white-color: white;
+  $gray-input-bg: #F3F2EE !default;
+  $card-black-color: #252422 !default;
+
+  body {
+    margin-top: 20px;
+    background-color: #ecf0f1;
+  }
+
+  .card-footer {
+    padding: 0px 20px;
+  }
+
+  .card {
+    border-radius: $border-radius-extreme;
+    box-shadow: 0 2px 2px rgba(204, 197, 185, 0.5);
+    background-color: $white-color;
+    color: $card-black-color;
+    padding: 10px 0;
+    margin-bottom: 20px;
+    position: relative;
+    z-index: 1;
+  }
+
+</style>