[fixed] Use encodeURI for splat params

See
#1128 (comment)

Author: mjackson

modules/URLUtils.js

@@ -177,7 +177,7 @@ export function formatPattern(pattern, params) {
       );
 
       if (paramValue != null)
-        pathname += encodeURIComponent(paramValue);
+        pathname += encodeURI(paramValue);
     } else if (token === '(') {
       parenCount += 1;
     } else if (token === ')') {

modules/__tests__/URLUtils-test.js

@@ -264,7 +264,7 @@ describe('formatPattern', function () {
 
   describe('when a pattern has one splat', function () {
     it('returns the correct path', function () {
-      expect(formatPattern('/a/*/d', { splat: 'b/c' })).toEqual('/a/b%2Fc/d');
+      expect(formatPattern('/a/*/d', { splat: 'b/c' })).toEqual('/a/b/c/d');
     });
   });