added brief section about configuring JVM for the server
added brief section about configuring JVM for the server

git-svn-id: f71382956303a8ee0446917b540995812f87e241@7400 0b971d98-bb2f-0410-8247-b05b2b5feb2a

HuangLS/neo4j,HuangLS/neo4j,HuangLS/neo4j,HuangLS/neo4j,HuangLS/neo4j