README.md: Free unlimited developer account adjustments
New: java-version param, encrypted passwords, improved proxy detection
changed default location of nwcloud.properties

from ./nwcloud.properties (current directory) to ${user.home}/.nwcloud/nwcloud.properties

with nwcloud.properties in the project directory, no way to use the maven-release-plugin unless by submitting the nwcloud.properties (incl. password)to the scm.
location of nwcloud.properties back to current directory
Merge branch 'master' of https://github.com/cthiebaud/nwcloud-maven-plugin

Conflicts:
	pom.xml
	src/main/scripts/usage.build.xml