How To Skip Action Controller Name From URL When There is no URLparameter?

In Configuration -->TypoScript --> setup.txt write below code:
plugin.tx_[your_extensionname].features.skipDefaultArguments = 1

Warning: This only works if you don't use switchableControllerActions in your flexform.
For Referance: http://lists.typo3.org/pipermail/typo3-project-typo3v4mvc/2011-November/010705.html