Added newlines at the end of source files to be compatible with clang.

src/main.c

@@ -96,4 +96,4 @@ void print_usage() {
            "           You may specify other time units such as:\n"
            "           m'imute, h'our, d'ay. Example: 5d 3h.\n"
            "           All given intervals will be summed up.\n");
-}
+}

src/main.h

@@ -24,4 +24,4 @@ void print_version();
 void print_usage();
 
 
-#endif
+#endif