Rename FLEXViewSnapshotViewController to better reflect what it does.

We’re using this in several places to simply show an image in a scroll view.

Classes/Object Explorers/FLEXImageExplorerViewController.m

@@ -7,7 +7,7 @@
 //
 
 #import "FLEXImageExplorerViewController.h"
-#import "FLEXViewSnapshotViewController.h"
+#import "FLEXImagePreviewViewController.h"
 
 typedef NS_ENUM(NSUInteger, FLEXImageExplorerRow) {
     FLEXImageExplorerRowImage
@@ -61,7 +61,7 @@ typedef NS_ENUM(NSUInteger, FLEXImageExplorerRow) {
 {
     UIViewController *drillInViewController = nil;
     if ([rowCookie isEqual:@(FLEXImageExplorerRowImage)]) {
-        drillInViewController = [[FLEXViewSnapshotViewController alloc] initWithImage:self.image];
+        drillInViewController = [[FLEXImagePreviewViewController alloc] initWithImage:self.image];
     }
     return drillInViewController;
 }

Classes/Object Explorers/FLEXViewExplorerViewController.m

@@ -10,7 +10,7 @@
 #import "FLEXRuntimeUtility.h"
 #import "FLEXUtility.h"
 #import "FLEXObjectExplorerFactory.h"
-#import "FLEXViewSnapshotViewController.h"
+#import "FLEXImagePreviewViewController.h"
 #import "FLEXPropertyEditorViewController.h"
 
 typedef NS_ENUM(NSUInteger, FLEXViewExplorerRow) {
@@ -160,7 +160,7 @@ typedef NS_ENUM(NSUInteger, FLEXViewExplorerRow) {
         }
         UIImage *previewImage = UIGraphicsGetImageFromCurrentImageContext();
         UIGraphicsEndImageContext();
-        imagePreviewViewController = [[FLEXViewSnapshotViewController alloc] initWithImage:previewImage];
+        imagePreviewViewController = [[FLEXImagePreviewViewController alloc] initWithImage:previewImage];
     }
     return imagePreviewViewController;
 }

Classes/View Hierarchy/FLEXViewSnapshotViewController.h

@@ -1,5 +1,5 @@
 //
-//  FLEXViewSnapshotViewController.h
+//  FLEXImagePreviewViewController.h
 //  Flipboard
 //
 //  Created by Ryan Olson on 6/12/14.
@@ -8,7 +8,7 @@
 
 #import <UIKit/UIKit.h>
 
-@interface FLEXViewSnapshotViewController : UIViewController
+@interface FLEXImagePreviewViewController : UIViewController
 
 - (id)initWithImage:(UIImage *)image;
 

Classes/View Hierarchy/FLEXViewSnapshotViewController.m

@@ -1,15 +1,15 @@
 //
-//  FLEXViewSnapshotViewController.m
+//  FLEXImagePreviewViewController.m
 //  Flipboard
 //
 //  Created by Ryan Olson on 6/12/14.
 //  Copyright (c) 2014 Flipboard. All rights reserved.
 //
 
-#import "FLEXViewSnapshotViewController.h"
+#import "FLEXImagePreviewViewController.h"
 #import "FLEXUtility.h"
 
-@interface FLEXViewSnapshotViewController () <UIScrollViewDelegate>
+@interface FLEXImagePreviewViewController () <UIScrollViewDelegate>
 
 @property (nonatomic, strong) UIImage *image;
 
@@ -18,7 +18,7 @@
 
 @end
 
-@implementation FLEXViewSnapshotViewController
+@implementation FLEXImagePreviewViewController
 
 - (id)initWithImage:(UIImage *)image
 {