podspec updates for 0.18+

@@ -11,7 +11,8 @@ Pod::Spec.new do |m|
 
   m.source = { :git => 'https://github.com/mapbox/mapbox-ios-sdk.git', :branch => 'develop' }
 
-  m.platform = :ios, '5.0'
+  m.platform              = :ios
+  m.ios.deployment_target = '5.0'
 
   m.source_files = 'Proj4/*.h', 'MapView/Map/*.{h,c,m}'
 
@@ -19,21 +20,14 @@ Pod::Spec.new do |m|
 
   m.prefix_header_file = 'MapView/MapView_Prefix.pch'
 
-  def m.post_install(target_installer)
-    puts "\nGenerating MapBox resources bundle\n".yellow if config.verbose?
-    Dir.chdir File.join(config.project_pods_root, 'MapBox') do
+  m.post_install do |library|
+    Dir.chdir File.join(library.sandbox_dir, 'MapBox') do
       command = "xcodebuild -project MapView/MapView.xcodeproj -target Resources CONFIGURATION_BUILD_DIR=../../Resources"
-      command << " 2>&1 > /dev/null" unless config.verbose?
       unless system(command)
         raise ::Pod::Informative, "Failed to generate MapBox resources bundle"
       end
     end
-    if Version.new(Pod::VERSION) >= Version.new('0.17.0')
-      script_path = target_installer.copy_resources_script_path
-    else
-      script_path = File.join(config.project_pods_root, target_installer.target_definition.copy_resources_script_name)
-    end
-    File.open(script_path, 'a') do |file|
+    File.open(library.copy_resources_script_path, 'a') do |file|
       file.puts "install_resource 'Resources/MapBox.bundle'"
     end
   end
@@ -74,15 +68,9 @@ Pod::Spec.new do |m|
     ]
   }
 
-  m.framework = 'CoreGraphics'
-  m.framework = 'CoreLocation'
-  m.framework = 'Foundation'
-  m.framework = 'QuartzCore'
-  m.framework = 'UIKit'
+  m.frameworks = 'CoreGraphics', 'CoreLocation', 'Foundation', 'QuartzCore', 'UIKit'
 
-  m.library = 'Proj4'
-  m.library = 'sqlite3'
-  m.library = 'z'
+  m.libraries = 'Proj4', 'sqlite3', 'z'
 
   m.xcconfig = { 'OTHER_LDFLAGS' => '-ObjC', 'LIBRARY_SEARCH_PATHS' => '"${PODS_ROOT}/MapBox/Proj4"' }