Action code fixes and improvements (#176)

* Makes Auth sample in-app password reset work on iOS 8-.

* Sets default iOS bundle ID for action code settings.

* Adds an entry in the Auth sample app to verify email in app.

* Removes '-' from 'in-app' to be consistent with other messages in the Auth sample app.

2 files changed, 12 insertions, 4 deletions

diff --git a/Firebase/Auth/Source/FIRActionCodeSettings.m b/Firebase/Auth/Source/FIRActionCodeSettings.m
index 2a8fc7f..02807ff 100644
--- a/Firebase/Auth/Source/FIRActionCodeSettings.m
+++ b/Firebase/Auth/Source/FIRActionCodeSettings.m
@@ -14,11 +14,19 @@
   * limitations under the License.
   */
 
- #import "FIRActionCodeSettings.h"
+#import "FIRActionCodeSettings.h"
 
- NS_ASSUME_NONNULL_BEGIN
+NS_ASSUME_NONNULL_BEGIN
 
- @implementation FIRActionCodeSettings
+@implementation FIRActionCodeSettings
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _iOSBundleID = [NSBundle mainBundle].bundleIdentifier;
+  }
+  return self;
+}
 
 - (void)setIOSBundleID:(NSString *)iOSBundleID {
    _iOSBundleID = [iOSBundleID copy];
diff --git a/Firebase/Auth/Source/Public/FIRActionCodeSettings.h b/Firebase/Auth/Source/Public/FIRActionCodeSettings.h
index b2739dc..de56a3f 100644
--- a/Firebase/Auth/Source/Public/FIRActionCodeSettings.h
+++ b/Firebase/Auth/Source/Public/FIRActionCodeSettings.h
@@ -41,7 +41,7 @@
  @property(assign, nonatomic) BOOL handleCodeInApp;
 
  /** @property iOSBundleID
-     @brief The iOS bundle ID, if available.
+     @brief The iOS bundle ID, if available. The default value is the current app's bundle ID.
   */
  @property(copy, nonatomic, readonly, nullable) NSString *iOSBundleID;