Fix Einstein url. Improve htt-gemfire structure

src/main/asciidoc/geode-setup.adoc

@@ -6,7 +6,7 @@ http://geode.apache.org/[Pivotal Gemfire] and start the `gfsh` CLI in a separate
    / _____/ ______/ ______/ /____/ /
   / /  __/ /___  /_____  / _____  /
  / /__/ / ____/  _____/ / /    / /
-/______/_/      /______/_/    /_/    1.2.1
+/______/_/      /______/_/    /_/    1.8.0
 
 Monitor and Manage Apache Geode
 gfsh>

src/main/asciidoc/index.adoc

@@ -11,7 +11,7 @@ Sabby Anandan; David Turanski; Glenn Renfro; Eric Bottard; Mark Pollack; Chris S
 
 :spring-cloud-stream-docs: http://docs.spring.io/spring-cloud-stream/docs/{scst-core-version}/reference/htmlsingle/index.html
 :github-code: https://github.com/spring-cloud/spring-cloud-dataflow-samples
-:scdf-release-train-name: Einstein.RELEASE
+:scdf-release-train-name: Einstein.GA
 :app-import-kafka-maven: http://bit.ly/{scdf-release-train-name}-stream-applications-kafka-10-maven
 :app-import-rabbit-maven: http://bit.ly/{scdf-release-train-name}-stream-applications-rabbit-maven
 

src/main/asciidoc/maven-access.adoc

@@ -3,5 +3,5 @@ access to public repositories, you will need to install the sample apps in your
 the server accordingly.  The sample applications are typically registered using Data Flow's bulk import facility. For example, the Shell command `dataflow:>app import --uri {app-import-rabbit-maven}` _(The actual URI is release and binder specific so refer to the sample instructions for the actual URL)_.
 The bulk import URI references a plain text file containing entries for all of the publicly available Spring Cloud Stream and Task applications published to `https://repo.spring.io`. For example,
 `source.http=maven://org.springframework.cloud.stream.app:http-source-rabbit:2.1.0.RELEASE` registers the `http` source app at the corresponding Maven address, relative to the remote repository(ies) configured for the
-Data Flow server. The format is `maven://<groupId>:<artifactId>:<version>`  You will need to https://repo.spring.io/libs-release/org/springframework/cloud/stream/app/spring-cloud-stream-app-descriptor/Einstein.RELEASE/spring-cloud-stream-app-descriptor-Einstein.RELEASE.rabbit-apps-maven-repo-url.properties[download] the required apps or https://github.com/spring-cloud-stream-app-starters[build] them and then install them in your Maven repository, using whatever group, artifact, and version you choose. If you do
+Data Flow server. The format is `maven://<groupId>:<artifactId>:<version>`  You will need to https://repo.spring.io/libs-release/org/springframework/cloud/stream/app/spring-cloud-stream-app-descriptor/Einstein.GA/spring-cloud-stream-app-descriptor-Einstein.RELEASE.rabbit-apps-maven-repo-url.properties[download] the required apps or https://github.com/spring-cloud-stream-app-starters[build] them and then install them in your Maven repository, using whatever group, artifact, and version you choose. If you do
 this, register individual apps using `dataflow:>app register...` using the `maven://` resource URI format corresponding to your installed app.

src/main/asciidoc/streaming/gemfire/http-gemfire/pcf.adoc

@@ -1,6 +1,6 @@
 [[gemfire-http-cf]]
-===== Using the Cloud Foundry Server
-====== Additional Prerequisites
+==== Using the Cloud Foundry Server
+===== Additional Prerequisites
 
 * A Cloud Foundry instance
 
@@ -11,7 +11,7 @@
 * Cloud Data Flow Cloud Foundry Server
 include::{docs_dir}/cloudfoundry-server.adoc[]
 
-====== Building and Running the Demo
+===== Building and Running the Demo
 
 . https://github.com/spring-cloud/spring-cloud-dataflow/blob/master/spring-cloud-dataflow-docs/src/main/asciidoc/streams.adoc#register-a-stream-app[Register] the out-of-the-box applications for the Rabbit binder
 +