Add content to placeholder descriptions on ecosystem landing page (#9583

)

- Added content for the descriptions for all three content areas (plugins, starters, external resources)

<img width="1549" alt="screen shot 2018-10-30 at 7 10 30 pm" src="https://user-images.githubusercontent.com/3461087/47758106-92634b80-dc77-11e8-9fa5-17b63ea9ef81.png">

www/src/components/ecosystem/ecosystem-board.js

@@ -28,7 +28,7 @@ const EcosystemBoard = ({
   <EcosystemBoardRoot>
     <EcosystemSection
       title="Plugins"
-      description="With 429 plugins, lorem ipsum sunt we need some proper copy here pulling in data from your favorite source is only a few mouseclicks away."
+      description="Plugins are packages that extend Gatsby sites. They can source content, transform data, and more!"
       subTitle="Featured Plugins"
       icon={PluginsIcon}
       links={[
@@ -44,7 +44,7 @@ const EcosystemBoard = ({
     />
     <EcosystemSection
       title="Starters"
-      description="Starters are boilerplate Gatsby sites maintained by the community which give you a headstart for your Gatsby project."
+      description="Starters are Gatsby sites that are preconfigured for different use cases to give you a head start for your project."
       subTitle="Featured Starters"
       icon={StartersIcon}
       links={[
@@ -55,7 +55,7 @@ const EcosystemBoard = ({
     />
     <EcosystemSection
       title="External Resources"
-      description="More awesome Gatsby content, created by the community."
+      description="A curated list of interesting Gatsby community projects and learning resources like podcasts and tutorials."
       links={[{ label: "Browse Resources", to: "/docs/awesome-gatsby/" }]}
     />
   </EcosystemBoardRoot>