Update devDependencies

.travis.yml

@@ -2,7 +2,7 @@ language: node_js
 services:
   - mongodb
 node_js:
-  - 6
+  - "lts/*"
 env:
   - USE_OLDEST_NPM_VERSIONS=0
   - USE_OLDEST_NPM_VERSIONS=1
@@ -12,7 +12,7 @@ before_install:
     then
       # Test against oldest allowed versions in package.json - Use sed to remove ^ characters
       sed -i 's/"\^/"/g' package.json
-      npm i [email protected].11 [email protected].8
+      npm i [email protected].0 [email protected].12
     else
       npm i mongoose reflect-metadata
     fi

README.md

@@ -407,9 +407,10 @@ This is the logical 'and' of `mongoose.Model<InstanceType<T>>` and `T`, so that
 
 #### Ref<T>
 
-`Ref<T>` means `T` logical 'or' `string`, so that both populated and unpopulated scenarios are handled for the reference property.
+For reference properties:
+`Ref<T>` - `T` if populated and `ObjectID` if unpopulated.
 
 ## Improvements
 
 * Add frequently used (currently not present) features if needed
-* Create moar tests (break down current huge one into multiple unit tests)
+* Create more tests (break down current huge one into multiple unit tests)