fix: restore demo build and drawing interactions

Sources/RDEpubReaderView/RDEpubReaderView.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name         = "RDEpubReaderView"
   s.module_name  = "RDEpubReaderView"
-  s.version      = "0.0.1"
+  s.version      = "0.0.2"
   s.summary      = "A reader view for EPUB and plain-text books"
   s.platform     = :ios, "15.0"
   s.swift_versions = ["5.10"]
@@ -9,11 +9,14 @@ Pod::Spec.new do |s|
   s.author       = { "shenlei" => "shenlei@touchread.com" }
   s.source       = { :git => "http://192.168.21.200:8418/4v5u09Z5a4Yuc/ReadViewSDK.git", :tag => "#{s.version}" }
   s.license      = "MIT"
-  s.source_files = "Sources/RDEpubReaderView/**/*.{swift}"
+  # This podspec lives inside Sources/RDEpubReaderView, so paths must be
+  # relative to this directory when it is consumed as a local pod.
+  s.source_files = "**/*.swift"
   s.resource_bundles = {
-    "RDEpubReaderViewAssets" => ["Sources/RDEpubReaderView/EPUBCore/Resources/**/*"]
+    "RDEpubReaderViewAssets" => ["EPUBCore/Resources/**/*"]
   }
   s.dependency "ZIPFoundation", "~> 0.9"
   s.dependency "DTCoreText", "~> 1.6"
+  s.dependency "SnapKit", "~> 5.7"
   s.requires_arc = true
 end