created nsend project
created NSender class which depends on the native libnsender (written in
C)
added JAXB reference implementation for the dynamic generation of java
files from xsd files.
added PDUGenerator class
added ProtocolDataUnit interface
added javadoc
Added checkstyle to the project.
Removed PDUGenerator because it's not possible to create a Java class
out of a xml schema that has sufficient functionality to be able to used
for networking simulation because xml schemas don't provide conditional
restrictions.
Added EthernetFrame and VlanTag for simulating EthernetFrames.
Added BitOperator for number operations on a bit basis.
Added ByteConverter for conversion of raw byte data into a readable
representation.
Added unit tests for BitOperator, ByteConverter and VlanTag.
Implemented Gradle and gradle's java plugin's needed directory structure
for building
Added the C source files to the same project (probably has to be undone
later on)
removed lib directory and its contents because it isn't needed anymore
switched the content of the repository to a directory above the old
working directory