Add documentation for Infinispan Server
Merge pull request #152 from maniksurtani/docs

Add documentation for Infinispan Server
ISPN-3521 Fork the upstream security subsystem to remove uses of deprecated Infinispan APIs
ISPN-3516 Remove deprecated API
ISPN-3051 Allow configuring the number of segments per node
ISPN-3517 Infinispan server ignores persistence configuration
ISPN-3510 Infinispan 6.0 should be able to parse 5.2.x config files and use 5.2.x custom cache stores

* the server can now read 5.2.x configurations
* removed 5.3.x configuratins