KMajorityLib/include/VocabBase.hpp
* Implemented static method to extract vocabulary type from a file.

VocabBuildDB/VocabBuildDB.cpp
* Removed vocabulary type as program argument.
* Launching error when vocabulary type is not valid.
* Set default values for norm and output nn index.

VocabMatch/VocabMatch.cpp
* Removed vocabulary type as program argument.
* Set default value for input nn index argument.
* Set all db images as deafult value for number of neighbors argument.
* Checking type of query descriptors.
* Saving ranked files using fstream instead of std i/o.