Update build instructions

Author: monkstone

README.md

@@ -25,10 +25,10 @@ rake javadoc
 
 ```bash
 jgem install propane # from rubygems
-jgem install propane-3.9.0-java.gem # local install
+jgem install propane-3.10.0-java.gem # local install
 # Alternative
 jruby -S gem install propane # from rubygems
-jruby -S gem install propane-3.9.0-java.gem # local install
+jruby -S gem install propane-3.10.0-java.gem # local install
 ```
 
 ## Check Install

Rakefile

@@ -18,7 +18,7 @@ end
 desc 'Install'
 task :install do
  sh 'mvn dependency:copy'
- sh "mv target/propane-#{Propane::VERSION}.jar lib"
+ FileUtils.mv("target/propane-#{Propane::VERSION}.jar", 'lib')
 end
 
 desc 'Gem'
@@ -36,11 +36,6 @@ task :compile do
  sh './mvnw package'
 end
 
-desc 'JRuby-Complete'
-task :install_complete do
- sh 'cd vendors && rake'
-end
-
 desc 'Test'
 task :test do
  sh 'jruby test/helper_methods_test.rb'