Remove build matrix

Author: bcylin

.travis.yml

@@ -1,13 +1,5 @@
 language: objective-c
 osx_image: xcode8.2
-matrix:
-  include:
-    - env: VERSION=9.3
-    - env: VERSION=10.1
-      script:
-        - bundle exec rake ci:build[$VERSION]
-        - make -B carthage
-        - make -B docs
 cache:
   bundler: true
   directories:
@@ -20,7 +12,9 @@ install:
 before_script:
   - xcodebuild -workspace ICInputAccessory.xcworkspace -list
 script:
-  - bundle exec rake ci:build[$VERSION]
+  - bundle exec rake ci:build
+  - make -B carthage
+  - make -B docs
 notifications:
   email: false
   slack:

Makefile

@@ -16,7 +16,7 @@ setup: brew-install
 	bundle exec pod install --no-repo-update
 
 carthage:
-	set -o pipefail && carthage build --no-skip-current --verbose | xcpretty
+	set -o pipefail && carthage build --no-skip-current --verbose | bundle exec xcpretty
 
 docs:
 	bundle exec jazzy --config .jazzy.yml