add Twitter connector compliance with the Connector base framework

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177979 a5903396-d722-0410-b921-86c7d4935375
bringing in, throttling to the component level


git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177980 a5903396-d722-0410-b921-86c7d4935375
bringing in throttling to component level

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@177982 a5903396-d722-0410-b921-86c7d4935375