added support for retrieving configGroup or Node by indexer. design breaking change: the DescribePath method is now considered to return the path up to the configNode (not included) meaning that the node name will be concated to the path
added support for a node to contain more levels, just like a config group
changed namespace because of complaints from customer that old namespace was coliding with System.Configuration.ConfigurationManager
fixed the testings. now that confignode can hold other configelements, when trying to retrieve one of its memebers, we need to chekc on the properties or delegate to the configuarionGroup
Update README.md
Update README.md

added more documentation
ConfigurationManager was replaced with ConfigurationReader
Merge pull request #1 from tamirdresher/MoreStringOperators

More string operators