Merge pull request #99 from kameshsampath/upgrade/v0.4.0

(docs):  fix navigation, pre-reqs,  commands

Author: kameshsampath

documentation/modules/ROOT/pages/04-scaling.adoc

@@ -340,11 +340,11 @@ watch oc get pods -n knativetutorial
 [#scaling-load-service]
 === Load the service
 
-We will now send some load to the greeter service.  The command below sends 50 concurrent requests (`-c 50`) for the next 10s (`-z 10s`) and test will run for 30 seconds (`-t 30S`)
+We will now send some load to the greeter service.  The command below sends 50 concurrent requests (`-c 50`) for the next 30s (`-t 30s`)
 
 [source,bash,subs="+macros,+attributes",linenums]
 ----
-siege -r 1 -c 50 -t 30S -d 2 \
+siege -r 1 -c 50 -t 30S \
   -H "Host: greeter.knativetutorial.example.com" \
   "http://pass:[${IP_ADDRESS}]"
 ----

documentation/modules/ROOT/pages/_partials/prereq-cli.adoc

@@ -31,14 +31,6 @@ kubectl version
 oc version 
 ----
 
-* Make sure right maven version is used (only for Java exercises)
-
-[source,bash]
-----
-# right maven version Apache Maven 3.5.x or above
-./mvnw --version
-----
-
 * Make sure to be on `knativetutorial` OpenShift project/kubernetes namespace
 
 [source,bash]

supplemental-ui/partials/header-content.hbs

@@ -2,7 +2,7 @@
   <nav class="navbar">
     <div class="navbar-brand">
       <div class="navbar-item">
-        <a href="#">Knative Tutorial</a>
+        <a href="/">Knative Tutorial</a>
       </div>
       <button class="navbar-burger" data-target="topbar-nav">
         <span></span>
@@ -27,8 +27,11 @@
         </div>
         <a class="navbar-item" href="https://twitter.com/rhdevelopers">
           <span class="icon">
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+            <svg aria-hidden="true" data-icon="twitter" role="img" xmlns="http://www.w3.org/2000/svg"
+              viewBox="0 0 512 512">
+              <path fill="#57aaee"
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+              </path>
             </svg>
           </span>
         </a>