Lots of async changes

Makefile

@@ -1,5 +1,4 @@
 SRC_DIR    := ./src
-VENDOR_DIR := ./vendor
 
 SRC_FILES := \
 	$(SRC_DIR)/setup.zsh \
@@ -22,34 +21,16 @@ HEADER_FILES := \
 
 PLUGIN_TARGET := zsh-autosuggestions.zsh
 
-SHUNIT2 := $(VENDOR_DIR)/shunit2/2.1.6
-STUB_SH := $(VENDOR_DIR)/stub.sh/stub.sh
-
-UNIT_TEST_PREREQS := \
-	$(SHUNIT2) \
-	$(STUB_SH)
-
 all: $(PLUGIN_TARGET)
 
 $(PLUGIN_TARGET): $(HEADER_FILES) $(SRC_FILES)
 	cat $(HEADER_FILES) | sed -e 's/^/# /g' > $@
 	cat $(SRC_FILES) >> $@
 
-$(SHUNIT2):
-	git submodule update --init vendor/shunit2
-
-$(STUB_SH):
-	git submodule update --init vendor/stub.sh
-
 .PHONY: clean
 clean:
 	rm $(PLUGIN_TARGET)
 
 .PHONY: test
-test: rspec unit_test
-
-unit_test: all $(UNIT_TEST_PREREQS)
-	script/test_runner.zsh $(UNIT_TESTS)
-
-rspec: all
-	bundle exec rspec $(RSPEC_TESTS)
+test: all
+	bundle exec rspec $(TESTS)