Add dependency on Carthage

Brewfile

@@ -0,0 +1 @@
+brew "carthage"

Cartfile

@@ -0,0 +1,2 @@
+github "Carthage/Commandant"
+github "antitypical/Result"

Cartfile.private

@@ -0,0 +1,2 @@
+github "Quick/Quick"
+github "Quick/Nimble"

Cartfile.resolved

@@ -0,0 +1,4 @@
+github "Carthage/Commandant" "0.15.0"
+github "Quick/Nimble" "v7.3.0"
+github "Quick/Quick" "v1.3.1"
+github "antitypical/Result" "4.0.0"

script/bootstrap

@@ -3,6 +3,8 @@
 main() {
   echo "==> 👢 Bootstrapping"
   bundle install
+  brew bundle
+  carthage bootstrap --platform macOS --cache-builds
 
   script/sort
 }

script/build

@@ -7,6 +7,11 @@ CONFIG="Release"
 
 main() {
   script/clean
+  
+  carthage build \
+    --platform macOS \
+    --cache-builds \
+    --configuration "$CONFIG"
 
   xcodebuild -project "$PROJECT" \
     -scheme "$SCHEME" \