Added support for some table options

The table options are:
comment, speculative_retry, additional_write_policy, gc_grace_seconds, bloom_filter_fp_chance, default_time_to_live, compaction, compression, caching, memtable_flush_period_in_ms, read_repair

Add --dump-cql flag in schema creation

--dump-cql flag will print out the CQL statements that will be executed without executing them

Support multiple connections mapping with multiple entity manager service

Introduce mapping between connections to entities by using dir config

Support tableOptions on create table

Support tableOptions on create table

Support metadata caching

Support metadata caching using cache service

Support composite partition key

Support creating schema with composite partition key and deprecate update method

Support insert with CassandraType

Merge pull request #4 from marcelglaeser/patch-1

Support insert with CassandraType

Added TTL for insert

Merge pull request #3 from panki3a/master

Added support for using TTL for insert and update