added the path to mono as a configurable setting
added option to download a file without using the configured proxy
added validation for pathToMono argument
updated to correctly use the correctly configured temp directory
updated to correctly use the correctly configured temp directory
updated to correctly use the correctly configured temp directory
corrected syntax error caused by copy paste
updated to resolve issue #58
updated grokassembly version in the test case
Fixed two discrepancies in the CLI options

1) Proxy port and Properties files were both using -p. Now the
properties file uses -P.
2) Nexus Proxy was defaulting to true, even if the properties said
false, so moved the check for its setting to happen after the properties
were merged and had it default to checking the properties file and
setting it to true if the properties didn't say.