title: LaunchDarkly Bootstrapping: (JS) Property Assignment Expected
body: <p>I am setting up LaunchDarkly to control my first feature flag and its working fine from server &amp; client side. 
  Now I am trying LaunchDarkly Bootstrap approach (From the below given Link) and tried like below my code, but it's not accepting the double braces and I do not know How to get flag value by using the bootstrap approach, so where I did go wrong in my code?. Could anyone please help me with an example? </p>
  
  <p>Link,</p>
  
  <pre><code>https://docs.launchdarkly.com/docs/js-sdk-reference#section-bootstrapping
  </code></pre>
  
  <p>Initialized client with Bootstrap option as below,</p>
  
  <pre><code>client = LDClient.initialize(sdkKey, userContext.user, options = {
          bootstrap: {
              {{ ldclient.all_flags(userContext.user) }}
         }
      });
  </code></pre>
  
  <p>And my function to get the flag value,</p>
  
  <pre><code>isFeatureEnabled: function (featureFlag, properties) {
          console.log("Before Variation");
          //we shall update the custom properties into user context.
          if (properties) {
              for (var k in properties) {
                  userContext.user.custom[k] = properties[k];
              }
          }
          //later make the identity call to update the user details.
          client.identify(userContext.user, null, function () { /*rules updated*/
              console.log("New user's flags available");
              //validate the feature flag
              var showFeature = client.variation(featureFlag);
              if (!showFeature) {
                  window.in8.platform.showUnauthorized('');
              }
              console.log("after Variation");
          });
      }
  </code></pre>