➖ Remove xcpretty dependency from install script

script/install

@@ -1,4 +1,9 @@
 #!/bin/bash -ex
+#
+# script/install
+# This script is called by the Homebrew formula, so should not
+# rely on any dependencies.
+#
 
 BUILD_DIR="$PWD/build"
 PROJECT="mas-cli.xcodeproj"
@@ -23,7 +28,6 @@ fi
 
 echo "==> 📲 Installing mas ($VERSION) to $PREFIX"
 
-set -o pipefail && \
 xcodebuild \
     -project "$PROJECT" \
     -scheme "$SCHEME" \
@@ -31,8 +35,7 @@ set -o pipefail && \
     OBJROOT="$BUILD_DIR" \
     SYMROOT="$BUILD_DIR" \
     DSTROOT="$INSTALL_TEMPORARY_FOLDER" \
-        install \
-    | bundle exec xcpretty --color
+    install
 
 # Deep copy MasKit.framework
 ditto -v \