Ensure 0s, 0ms don't say to omit the units (fixes #224)

Author: nzakas

src/rules/zero-units.js

@@ -21,7 +21,7 @@ CSSLint.addRule({
                 len = parts.length;
 
             while(i < len){
-                if ((parts[i].units || parts[i].type == "percentage") && parts[i].value === 0){
+                if ((parts[i].units || parts[i].type == "percentage") && parts[i].value === 0 && parts[i].type != "time"){
                     reporter.report("Values of 0 shouldn't have units specified.", parts[i].line, parts[i].col, rule);
                 }
                 i++;

tests/rules/zero-units.js

@@ -31,7 +31,14 @@
         "Using 0 should not result in a warning": function(){
             var result = CSSLint.verify("h1 { left: 0; }", { "zero-units": 1 });
             Assert.areEqual(0, result.messages.length);
+        },
+        
+        "Using 0s for animation-duration should not result in a warning": function(){
+            var result = CSSLint.verify("h1 { animation-duration: 0s; }", { "zero-units": 1 });
+            Assert.areEqual(0, result.messages.length);
         }
+        
+        
     }));
 
 })();