ACCUMULO-4673 Review proxy docs & example code

* Deleted proxy docs & example code as they were moved
  to documentation in accumulo-website repo
* proxy.thrift now lives in lib/proxy/thrift of release tarball
* generated lang bindings now go to lib/proxy/
* proxy.properties file is in conf/templates now
* the proxy can now be run using accumulo-service
8 files changed
tree: 08c1daaf642cd2056781788aa9627d78e1b4258f
  1. src/
  2. .gitignore
  3. pom.xml
  4. proxy.properties