Add Makefile to fixture/test to make building tests easier

 No rake and ruby required to build existing tests

extras/fixture/test/Makefile

+CC = gcc
+DEFINES = -D UNITY_OUTPUT_CHAR=UnityOutputCharSpy_OutputChar
+SRC = ../src/unity_fixture.c \
+      ../../../src/unity.c   \
+      unity_fixture_Test.c   \
+      unity_fixture_TestRunner.c \
+      unity_output_Spy.c     \
+      main/AllTests.c
+
+INC_DIR = -I../src -I../../../src/
+TARGET = fixture_tests.exe
+
+all:
+	@ $(CC) $(DEFINES) $(SRC) $(INC_DIR) -o $(TARGET)
+	@ ./$(TARGET)