Fixing per @yknl comments

Signed-off-by: Mary Anthony <mary@blockstack.com>

_browser/hello-blockstack.md

@@ -258,11 +258,12 @@ several states the user can be in:
 The application handles these situations as followed:
 
 ```js
-if (blockstack.isUserSignedIn()) {
-  var profile = blockstack.UserSession.loadUserData().profile
+var userSession = new UserSession()
+if (userSession.isUserSignedIn()) {
+  var profile = userSession.loadUserData().profile
     showProfile(profile)
-} else if (blockstack.UserSession.isSignInPending()) {
-  blockstack.UserSession.handlePendingSignIn().then(function(userData) {
+} else if (userSession.isSignInPending()) {
+  userSession.handlePendingSignIn().then(function(userData) {
     window.location = window.location.origin
   })
 }

_develop/add_auth.md

@@ -51,8 +51,9 @@ To check for the presence of this token, your app should call `UserSession.isSig
 ```js
 import * as blockstack from 'blockstack'
 
-if (blockstack.UserSession.isSignInPending()) {
-    blockstack.UserSession.handlePendingSignIn()
+var userSession = new UserSession()
+if (userSession.isSignInPending()) {
+    userSession.handlePendingSignIn()
     .then(userData => {
         const profile = userData.profile
     })

_develop/storage.md

@@ -86,7 +86,8 @@ the `publish_data` scope during authentication.
    app: 'http://BlockstackApp.com' // origin of the app this file is stored for
  }
 
- blockstack.UserSession.getFile("/message.txt", options)
+var userSession = new UserSession()
+userSession.putFile("/hello.txt", "hello world!", options)
  .then((fileContents) => {
     // get the contents of the file /message.txt
     assert(fileContents === "hello world!")

_storage/hello-hub-choice.md

@@ -149,13 +149,18 @@ To replace the default login, do the following:
 2. Locate the `redirectToSignIn()` method at line 4.
 3. Replace `redirectToSignIn()` method with the `blockstack.UserSession.redirectToSignInWithAuthRequest(authRequest)` method.
 
+   ```javascript
+   var userSession = new UserSession()
+   userSession.redirectToSignInWithAuthRequest(authRequest)
+   ```
+
    The `authRequest` is the authentication request generated by `makeAuthRequest()` method.
 
 4. Immediately above the method you just added and below the `event.preventDefault()` method, construct a String `const` for the `authRequest`:
 
     ```
-    const authRequest = blockstack.makeAuthRequest(
-      blockstack.generateAndStoreTransitKey(),
+    const authRequest = userSession.makeAuthRequest(
+      userSession.generateAndStoreTransitKey(),
       'http://localhost:8080/',
       'http://localhost:8080/manifest.json',
       ['store_write', 'publish_data'],
@@ -245,12 +250,13 @@ import {
   redirectToSignInWithAuthRequest
 } from 'blockstack';
 
-const authRequest = makeAuthRequest(undefined, undefined, undefined, undefined, undefined, undefined, {
+var userSession = new UserSession()
+const authRequest = userSession.makeAuthRequest(undefined, undefined, undefined, undefined, undefined, undefined, {
    solicitGaiaHubUrl: true,
   recommendedGaiaHubUrl: 'https://mygaiahub.com'
 });
 
-const authRequest = makeAuthRequest(
+const authRequest = userSession.makeAuthRequest(
   generateAndStoreTransitKey(),
   'http://localhost:8080/',
   'http://localhost:8080/manifest.json',
@@ -262,7 +268,7 @@ const authRequest = makeAuthRequest(
   }
 );
 
-redirectToSignInWithAuthRequest(authRequest);
+userSession.redirectToSignInWithAuthRequest(authRequest);
 ```
 
 Passing these parameters changes the storage hub URL prompt to the following: