Add chmod +x to ensure cuckoo_generator can be executed.

Cuckoo.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = "Cuckoo"
-  s.version          = "0.11.0"
+  s.version          = "0.11.1"
   s.summary          = "Cuckoo - first boilerplate-free Swift mocking framework."
   s.description      = <<-DESC
                         Cuckoo is a mocking framework with an easy to use API (inspired by Mockito).
@@ -23,8 +23,8 @@ Pod::Spec.new do |s|
   s.preserve_paths              = ['Generator/**/*', 'run', 'build_generator']
   generator_name                = 'cuckoo_generator'
   s.prepare_command             = <<-CMD
-                                    GREP_OPTIONS=
-                                    curl -Lo #{generator_name} `curl "https://api.github.com/repos/Brightify/Cuckoo/releases/tags/#{s.version}" | grep -oe '"browser_download_url":\s*"[^" ]*"' | grep -oe 'http[^" ]*' | grep #{generator_name} | head -1`
+                                    curl -Lo #{generator_name} https://github.com/Brightify/Cuckoo/releases/download/#{s.version}/#{generator_name}
+                                    chmod +x #{generator_name}
                                 CMD
   s.frameworks                  = 'XCTest', 'Foundation'
   s.requires_arc                = true

run

@@ -3,12 +3,13 @@
 SCRIPT_PATH="$(dirname "$0")"
 FILE_NAME="cuckoo_generator"
 FILE_PATH="$SCRIPT_PATH/$FILE_NAME"
-GREP_OPTIONS=
+GREP_OPTIONS=""
 if [[ ! -e "$FILE_PATH" ]]; then
   echo "No Cuckoo Generator found, downloading latest version..."
   pushd "$SCRIPT_PATH"
   curl -Lo ${FILE_NAME} `curl "https://api.github.com/repos/Brightify/Cuckoo/releases/latest" | grep -oe '"browser_download_url":\s*"[^" ]*"' | grep -oe 'http[^" ]*' | grep ${FILE_NAME} | head -1`
-	popd
+  chmod +x ${FILE_NAME}
+  popd
 fi
 
 INPUT_FILES=""