[DOC release] Replace deprecated store.find with store.findRecord

(cherry picked from commit cf889b3)

Conflicts:
	addon/-private/system/model/model.js
	addon/-private/system/store/finders.js

addon/-private/system/coerce-id.js

@@ -1,5 +1,5 @@
 // Used by the store to normalize IDs entering the store.  Despite the fact
-// that developers may provide IDs as numbers (e.g., `store.find(Person, 1)`),
+// that developers may provide IDs as numbers (e.g., `store.findRecord('person', 1)`),
 // it is important that internally we use strings, since IDs may be serialized
 // and lose type information.  For example, Ember's router may put a record's
 // ID into the URL, and if we later try to deserialize that URL and find the

addon/-private/system/many-array.js

@@ -238,7 +238,7 @@ export default Ember.Object.extend(Ember.MutableArray, Ember.Evented, {
     Example
 
     ```javascript
-    store.find('inbox', 1).then(function(inbox) {
+    store.findRecord('inbox', 1).then(function(inbox) {
       inbox.get('messages').then(function(messages) {
         messages.forEach(function(message) {
           message.set('isRead', true);

addon/-private/system/model/internal-model.js

@@ -536,7 +536,7 @@ InternalModel.prototype = {
     came back from the server, except the user obtained them out of band and is informing
     the store of their existence. The most common use case is for supporting client side
     nested URLs, such as `/posts/1/comments/2` so the user can do
-    `store.find('comment', 2, {post:1})` without having to fetch the post.
+    `store.findRecord('comment', 2, { preload: { post: 1 } })` without having to fetch the post.
 
     Preloaded data can be attributes and relationships passed in either as IDs or as actual
     models.

addon/-private/system/model/model.js

@@ -82,7 +82,7 @@ var Model = Ember.Object.extend(Ember.Evented, {
     var record = store.createRecord('model');
     record.get('isLoaded'); // true
 
-    store.find('model', 1).then(function(model) {
+    store.findRecord('model', 1).then(function(model) {
       model.get('isLoaded'); // true
     });
     ```
@@ -104,7 +104,7 @@ var Model = Ember.Object.extend(Ember.Evented, {
     var record = store.createRecord('model');
     record.get('hasDirtyAttributes'); // true
 
-    store.find('model', 1).then(function(model) {
+    store.findRecord('model', 1).then(function(model) {
       model.get('hasDirtyAttributes'); // false
       model.set('foo', 'some value');
       model.get('hasDirtyAttributes'); // true
@@ -283,7 +283,7 @@ var Model = Ember.Object.extend(Ember.Evented, {
     var record = store.createRecord('model');
     record.get('id'); // null
 
-    store.find('model', 1).then(function(model) {
+    store.findRecord('model', 1).then(function(model) {
       model.get('id'); // '1'
     });
     ```

addon/-private/system/store.js

@@ -1209,14 +1209,14 @@ Store = Service.extend({
 
   /**
     This method returns if a certain record is already loaded
-    in the store. Use this function to know beforehand if a find()
+    in the store. Use this function to know beforehand if a findRecord()
     will result in a request or that it will be a cache hit.
 
      Example
 
     ```javascript
     store.recordIsLoaded('post', 1); // false
-    store.find('post', 1).then(function() {
+    store.findRecord('post', 1).then(function() {
       store.recordIsLoaded('post', 1); // true
     });
     ```

addon/-private/system/store/finders.js

@@ -20,7 +20,7 @@ export function _find(adapter, store, typeClass, id, internalModel, options) {
   var snapshot = internalModel.createSnapshot(options);
   var promise = adapter.findRecord(store, typeClass, id, snapshot);
   var serializer = serializerForAdapter(store, adapter, internalModel.type.modelName);
-  var label = "DS: Handle Adapter#find of " + typeClass + " with id: " + id;
+  var label = "DS: Handle Adapter#findRecord of " + typeClass + " with id: " + id;
 
   promise = Promise.resolve(promise, label);
   promise = _guard(promise, _bind(_objectIsAlive, store));