Add settings reader for Gist and Gravatar integration.

PBGitDefaults.h

@@ -12,5 +12,7 @@
 }
 
 + (int) commitMessageViewVerticalLineLength;
++ (BOOL) isGistEnabled;
++ (BOOL) isGravatarEnabled;
 
 @end

PBGitDefaults.m

@@ -10,6 +10,8 @@
 
 #define kDefaultVerticalLineLength 50
 #define kCommitMessageViewVerticalLineLength @"PBCommitMessageViewVerticalLineLength"
+#define kEnableGist @"PBEnableGist"
+#define kEnableGravatar @"PBEnableGravatar"
 
 @implementation PBGitDefaults
 
@@ -18,6 +20,10 @@
 	NSMutableDictionary *defaultValues = [NSMutableDictionary dictionary];
 	[defaultValues setObject:[NSNumber numberWithInt:kDefaultVerticalLineLength]
                       forKey:kCommitMessageViewVerticalLineLength];
+	[defaultValues setObject:[NSNumber numberWithBool:YES]
+			  forKey:kEnableGist];
+	[defaultValues setObject:[NSNumber numberWithBool:YES]
+			  forKey:kEnableGravatar];
 	[[NSUserDefaults standardUserDefaults] registerDefaults:defaultValues];
 }
 
@@ -26,4 +32,14 @@
 	return [[NSUserDefaults standardUserDefaults] integerForKey:kCommitMessageViewVerticalLineLength];
 }
 
++ (BOOL) isGistEnabled
+{
+	return [[NSUserDefaults standardUserDefaults] boolForKey:kEnableGist];
+}
+
++ (BOOL) isGravatarEnabled
+{
+	return [[NSUserDefaults standardUserDefaults] boolForKey:kEnableGravatar];
+}
+
 @end