add vim line to tests

tests/assign.ethlang

@@ -7,3 +7,5 @@ fn main()
     print(v);
 }
 
+// vim: syntax=rust commentstring=//\ %s
+

tests/bool.ethlang

@@ -6,3 +6,6 @@ fn main()
 
     let cond: bool = 1 == 2;
 }
+
+// vim: syntax=rust commentstring=//\ %s
+

tests/fn_int.ethlang

@@ -8,3 +8,5 @@ fn main()
     my_int_fn();
 }
 
+// vim: syntax=rust commentstring=//\ %s
+

tests/fn_void.ethlang

@@ -9,4 +9,5 @@ fn main()
     my_explicit_void();
 }
 
+// vim: syntax=rust commentstring=//\ %s
 

tests/if.ethlang

@@ -23,3 +23,6 @@ fn main()
 
     print(a);
 }
+
+// vim: syntax=rust commentstring=//\ %s
+

tests/int.ethlang

@@ -15,3 +15,4 @@ fn main()
 }
 
 // vim: syntax=rust commentstring=//\ %s
+

tests/let.ethlang

@@ -6,3 +6,5 @@ fn main()
     let c = b;
 }
 
+// vim: syntax=rust commentstring=//\ %s
+

tests/loop.ethlang

@@ -20,3 +20,6 @@ fn main()
 
     print(a);
 }
+
+// vim: syntax=rust commentstring=//\ %s
+

tests/operators.ethlang

@@ -30,3 +30,5 @@ fn main()
     print(2 * (3 + 4));
 }
 
+// vim: syntax=rust commentstring=//\ %s
+

tests/pointer.ethlang

@@ -27,3 +27,5 @@ fn main()
     print(a);
 }
 
+// vim: syntax=rust commentstring=//\ %s
+