Fix gh-1588: Localize "it's free!" String (#1594)

* Add it's free string
* Add it's free string into page
* Update presentation.jsx

src/components/intro/intro.jsx

@@ -16,6 +16,7 @@ var Intro = React.createClass({
                 'intro.aboutScratch': 'ABOUT SCRATCH',
                 'intro.forEducators': 'FOR EDUCATORS',
                 'intro.forParents': 'FOR PARENTS',
+                'intro.itsFree': 'it\'s free!',
                 'intro.joinScratch': 'JOIN SCRATCH',
                 'intro.seeExamples': 'SEE EXAMPLES',
                 'intro.tagLine': 'Create stories, games, and animations<br /> Share with others around the world',
@@ -96,7 +97,7 @@ var Intro = React.createClass({
                             <div className="text">
                                 {this.props.messages['intro.joinScratch']}
                             </div>
-                            <div className="text subtext">( it&rsquo;s free )</div>
+                            <div className="text subtext">{this.props.messages['intro.itsFree']}</div>
                         </a>
                         <Registration key="registration"
                                       isOpen={this.state.registrationOpen}

src/views/splash/l10n.json

@@ -14,6 +14,7 @@
     "intro.aboutScratch": "ABOUT SCRATCH",
     "intro.forEducators": "FOR EDUCATORS",
     "intro.forParents": "FOR PARENTS",
+    "intro.itsFree": "it's free!",
     "intro.joinScratch": "JOIN SCRATCH",
     "intro.seeExamples": "SEE EXAMPLES",
     "intro.tagLine": "Create stories, games, and animations<br /> Share with others around the world",

src/views/splash/presentation.jsx

@@ -208,6 +208,7 @@ var SplashPresentation = injectIntl(React.createClass({
             'intro.aboutScratch': formatMessage({id: 'intro.aboutScratch'}),
             'intro.forEducators': formatMessage({id: 'intro.forEducators'}),
             'intro.forParents': formatMessage({id: 'intro.forParents'}),
+            'intro.itsFree': formatMessage({id: 'intro.itsFree'}),
             'intro.joinScratch': formatMessage({id: 'intro.joinScratch'}),
             'intro.seeExamples': formatMessage({id: 'intro.seeExamples'}),
             'intro.tagLine': formatHTMLMessage({id: 'intro.tagLine'}),