create img from app bundle if img file is not found in Theme bundle

Author: Neeeo

AWLThemeManager.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "AWLThemeManager"
-  s.version      = "1.0.1"
+  s.version      = "1.0.2"
   s.summary      = "AWLThemeManager is a lightweight theme manager for iOS."
   s.homepage     = "https://github.com/appwilldev/AWLThemeManager"
   # s.screenshots  = "www.example.com/screenshots_1.gif", "www.example.com/screenshots_2.gif"

AWLThemeManager/AWLThemeManager.m

@@ -127,7 +127,12 @@ - (UIImage *)imageNamed:(NSString *)imgName forTheme:(NSString*)themeName
 
     if (img == nil) {
         NSString *baseTheme = self.themeRelationship[themeName];
-        img = [self imageNamed:imgName forTheme:baseTheme];
+        if ([self isValidString:baseTheme]) {
+            img = [self imageNamed:imgName forTheme:baseTheme];
+        }
+        else {
+            img = [UIImage imageNamed:imgName];
+        }
     }
 
     return img;