Structure project almost by features. Start by organizing view controllers.

Riot/Modules/StartChat/StartChatViewController.h

@@ -0,0 +1,53 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "ContactsTableViewController.h"
+
+/**
+ 'StartChatViewController' instance is used to prepare new room creation.
+ */
+@interface StartChatViewController : ContactsTableViewController <UITableViewDataSource, UISearchBarDelegate, ContactsTableViewControllerDelegate>
+
+@property (weak, nonatomic) IBOutlet UIView *searchBarHeader;
+@property (weak, nonatomic) IBOutlet UISearchBar *searchBarView;
+@property (weak, nonatomic) IBOutlet UIView *searchBarHeaderBorder;
+
+@property (weak, nonatomic) IBOutlet NSLayoutConstraint *searchBarTopConstraint;
+@property (weak, nonatomic) IBOutlet NSLayoutConstraint *tableViewBottomConstraint;
+
+/**
+ Tell whether a search session is in progress
+ */
+@property (nonatomic) BOOL isAddParticipantSearchBarEditing;
+
+/**
+ Returns the `UINib` object initialized for a `StartChatViewController`.
+ 
+ @return The initialized `UINib` object or `nil` if there were errors during initialization
+ or the nib file could not be located.
+ */
++ (UINib *)nib;
+
+/**
+ Creates and returns a new `StartChatViewController` object.
+ 
+ @discussion This is the designated initializer for programmatic instantiation.
+ @return An initialized `StartChatViewController` object if successful, `nil` otherwise.
+ */
++ (instancetype)startChatViewController;
+
+@end
+