Fix U.camelCase(string).

Author: javadev

src/main/java/com/github/underscore/lodash/U.java

@@ -1191,8 +1191,8 @@ public static String camelCase(final String string) {
         return createCompounder(new Function3<String, String, Integer, String>() {
             public String apply(final String result, final String word, final Integer index) {
                 final String localWord = word.toLowerCase(Locale.getDefault());
-                return result + (index > 0 ? word.substring(0, 1).toUpperCase(Locale.getDefault())
-                    + word.substring(1) : localWord);
+                return result + (index > 0 ? localWord.substring(0, 1).toUpperCase(Locale.getDefault())
+                    + localWord.substring(1) : localWord);
             }
         }).apply(string);
     }

src/test/java/com/github/underscore/lodash/StringTest.java

@@ -67,6 +67,7 @@ public void camelCase() {
         assertEquals("fooBar", U.chain("Foo Bar").camelCase().item());
         assertEquals("fooBar", U.camelCase("--foo-bar"));
         assertEquals("fooBar", U.camelCase("__foo_bar__"));
+        assertEquals("ThisIsAnExampleString", U.upperFirst(U.camelCase("THIS_IS_AN_EXAMPLE_STRING")));
         assertEquals("", U.camelCase(null));
         assertEquals("a", U.camelCase("\u00c0"));
     }