feat(associations): many-to-many associations

fix(associations): fix association queries, must use `include` instead of ForeignKey
fix(error): error decorator was missing await, which prevented it from catching errors
fix(error): console.error the error
refactor(crud): don't use `request.models[name]`, use the model directly
chore: README added

src/error.js

@@ -1,10 +1,11 @@
 export default (target, key, descriptor) => {
   let fn = descriptor.value;
 
-  descriptor.value = (request, reply) => {
+  descriptor.value = async (request, reply) => {
     try {
-      fn(request, reply);
+      await fn(request, reply);
     } catch(e) {
+      console.error(e);
       reply(e);
     }
   }