Upgraded gradle version to 1.10
Using compile time classpath instead of runtime classpath as coverity classpath
Coverity home can be configured through plugin extension
If coverity plugin is applied at the root & includeSubProjects is set to true, all sub-projects will be included.
Option to specify booclasspath added.
Coverity classpath is specified with both compile & runtime dependencies.
Coverity connect details can be configured either using the configuration XML file or via coverity extension properties.
Updated README with usage details.