Refactored template files

+ changed the test group template name.

.template_files/test_module/test_module_name.cpp

@@ -12,7 +12,7 @@ extern "C"
 #include "module_name.h"
 }
 
-TEST_GROUP(FirstTestGroup)
+TEST_GROUP(tg_module_name)
 {
     void setup()
     {
@@ -24,12 +24,12 @@ TEST_GROUP(FirstTestGroup)
     }
 };
 
-TEST(FirstTestGroup, FirstTest)
+TEST(tg_module_name, FirstTest)
 {
    FAIL("Fail me!");
 }
 
-TEST(FirstTestGroup, SecondTest)
+TEST(tg_module_name, SecondTest)
 {
    STRCMP_EQUAL("hello", "world");
    LONGS_EQUAL(1, 2);