Updates to 2.6 Service docs
Updates to installation instructions.
An "official" cookbook.
Put command desc in quotes
Update.
Updates to installation.
CDAP-538: Ported procedures to services of SparkKMeans app; Updated scripts.
Removes old diagrams accidentally checked in.
Updates installation manual.
Fixes broken link in service restful api (https://issues.cask.co/browse/CDAP-653)
Adds instructions about removing applications.
Standardized CDAP component nomenclature, and added a list of packages to the component chart.
Remove packages.
(CDAP-684) Fix ClassLoading for Service in distributed mode
CDAP-538: Ported SparkPageRank app to use services instead of procedures.
Merge branch 'develop' of github.com:caskdata/cdap into CDAP-538-spark-page-rank-app
Merge remote-tracking branch 'upstream/develop' into CDAP-538-spark-k-means-app
Merge pull request #644 from caskdata/feature/fix-service-classloading

(CDAP-684) Fix ClassLoading for Service in distributed mode
Merge pull request #639 from caskdata/feature/r2.5.2_installation_fix

Updates to installation instructions.
Merge remote-tracking branch 'upstream/develop' into CDAP-538-spark-k-means-app
CDAP-538: Replaced sendError to sendString for response.
CDAP-538: Added tests for SparkKMeans app; Send response as string instead of Json.
CDAP-538: Added tests for SparkPageRank application.
Merge remote-tracking branch 'upstream/develop' into CDAP-538-spark-page-rank-app