updated docs to include create a class guide

app/imports/server/publications/docs.js

@@ -8,6 +8,7 @@ const docPaths = [
   'dependency-loops',
   'docs',
   'tags',
+  'walkthroughs/create-a-class',
 ];
 const docs = new Map();
 docPaths.forEach(path => {

app/imports/ui/pages/Documentation.vue

@@ -1,7 +1,10 @@
 <template>
   <v-container class="documentation">
-    <v-row>
-      <v-col cols="12">
+    <v-row justify="center">
+      <v-col
+        cols="12"
+        lg="8"
+      >
         <v-fade-transition mode="out-in">
           <v-card
             v-if="doc"

app/imports/ui/pages/FunctionReference.vue

@@ -1,7 +1,10 @@
 <template>
   <v-container class="documentation">
-    <v-row>
-      <v-col cols="12">
+    <v-row justify="center">
+      <v-col
+        cols="12"
+        lg="8"
+      >
         <v-card>
           <v-card-text class="markdown">
             <h1>Functions</h1>