Search.go
1. New function crawlerCounter() - Count the number of crawler routine has submitted to the system
2. Remove all the indexing message
Since their is a test.go responsible to extract the indexed data, it is no longer necessary
Merge remote-tracking branch 'origin/master' into master1
Indexer.go
1. Fix the bug where the indexer will stop when a html parse crash
Merge branch 'master1'