message: Modified podspec template to specify recursive header seearch path
diff: Pod::Spec.new do |s|
  s.name = 'TensorFlowLiteTaskVision'
  - s.version = '0.0.1'
  + s.version = '${TFLS_BUILD_VERSION}'
  s.authors = 'Google Inc.'
  - s.license = { :type => 'Apache' }
  + s.license = { :type => 'Apache',:file => "LICENSE.txt"}
  s.homepage = 'https://github.com/tensorflow/tflite-support'
  - s.source = { :http => ENV['TFLS_DOWNLOAD_URL'] }
  + s.source = { :http => '${TFLS_DOWNLOAD_URL}' }
  s.summary = 'TensorFlow Lite Task Library - Vision'
  s.description = 'The Natural Language APIs of the TFLite Task Library'
  @@ -13,12 +13,13 @@ Pod::Spec.new do |s|
  s.module_name = 'TensorFlowLiteTaskVision'
  s.static_framework = true
  - objc_dir = 'tensorflow_lite_support/ios/'
  + root_dir_name = "tensorflow_lite_support"
  + objc_dir = root_dir_name + '/ios/'
  objc_task_dir = objc_dir + 'task/'
  objc_core_dir = objc_task_dir + 'core/'
  objc_processor_dir = objc_task_dir + 'processor/'
  objc_vision_dir = objc_task_dir + 'vision/'
  - gml_image_dir = 'tensorflow_lite_support/odml/ios/image/'
  + gml_image_dir = root_dir_name + '/odml/ios/image/'
  s.public_header_files = [
  objc_vision_dir + 'apis/*.h',
  gml_image_dir + 'apis/*.h',
  @@ -28,8 +29,8 @@ Pod::Spec.new do |s|
  objc_vision_dir + 'sources/*.h'
  ]
  - c_dir = 'tensorflow_lite_support/c/'
  - c_task_dir = 'tensorflow_lite_support/c/task/'
  + c_dir = root_dir_name + '/c/'
  + c_task_dir = c_dir + 'task/'
  c_core_dir = c_task_dir + 'core/'
  c_processor_dir = c_task_dir + 'processor/'
  c_vision_dir = c_task_dir + 'vision/'
  @@ -52,18 +53,7 @@ Pod::Spec.new do |s|
  s.module_map = objc_vision_dir + 'apis/framework.modulemap'
  s.pod_target_xcconfig = {
  'HEADER_SEARCH_PATHS' =>
  - '"${PODS_TARGET_SRCROOT}" ' +
  - '"${PODS_TARGET_SRCROOT}/' + c_dir + '" ' +
  - '"${PODS_TARGET_SRCROOT}/' + c_dir + 'core" ' +
  - '"${PODS_TARGET_SRCROOT}/' + c_dir + 'processor" ' +
  - '"${PODS_TARGET_SRCROOT}/' + c_dir + 'vision" ' +
  - '"${PODS_TARGET_SRCROOT}/' + c_dir + 'vision/core" ' +
  - '"${PODS_TARGET_SRCROOT}/' + gml_image_dir + 'apis" ' +
  - '"${PODS_TARGET_SRCROOT}/' + objc_dir + 'sources" ' +
  - '"${PODS_TARGET_SRCROOT}/' + objc_core_dir + 'sources" ' +
  - '"${PODS_TARGET_SRCROOT}/' + objc_processor_dir + 'sources" ' +
  - '"${PODS_TARGET_SRCROOT}/' + objc_vision_dir + 'apis" ' +
  - '"${PODS_TARGET_SRCROOT}/' + objc_vision_dir + 'sources" ',
  + '"${PODS_TARGET_SRCROOT}/' + root_dir_name + '/.."/**',
  'VALID_ARCHS' => 'x86_64 armv7 arm64',
  }
  