README.md in henkei-1.14.4 vs README.md in henkei-1.15.1

@@ -90,10 +90,11 @@
 ## Installation and Dependencies
 
 ### Java Runtime
 
 Henkei packages the Apache Tika application jar and requires a working JRE for it to work.
+Check that you either have the `JAVA_HOME` environment variable set, or that `java` is in your path. 
 
 ### Gem
 
 Add this line to your application's Gemfile:
 
@@ -104,9 +105,15 @@
     $ bundle
 
 Or install it yourself as:
 
     $ gem install henkei
+    
+### Heroku
+
+Add the JVM Buildpack to your Heroku project:
+
+    $ heroku buildpacks:add heroku/jvm --index 1 -a YOUR_APP_NAME
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch ( `git checkout -b my-new-feature` )