diff --git a/README b/README
index fede170..86468cc 100644
--- a/README
+++ b/README
@@ -1,11 +1,14 @@
-java-inline is a plugin for RubyInline that adds JVM language support. See the examples dir for a simple example of using it.
+java-inline is a plugin for RubyInline that adds JVM language support. See the examples dir for simple examples of using it.
 
-java-inline adds support for Java
+'java_inline' adds support for Java.
+
+'scala_inline' adds support for Scala.
+
+'mirah_inline' adds support for Mirah, requires the 'mirah' gem installed.
 
-scala-inline adds support for Scala.
 
 Running example
--------------------
+---------------
 
 gem install RubyInline
 
@@ -13,3 +16,4 @@ and to run the example
 cd examples
 jruby fastmath.rb
 jruby -J-Dscala.home=<your scala home> scalamath.rb
+
diff --git a/examples/mirahmath.rb b/examples/mirahmath.rb
index b5b815a..95e452a 100644
--- a/examples/mirahmath.rb
+++ b/examples/mirahmath.rb
@@ -20,7 +20,7 @@ def fib_ruby(n)
   
   inline :Mirah do |builder|
     builder.mirah "
-      def factorial_mirah(max:int)
+      def factorial_mirah(max:int):int
         i = max
         result = 1
         while i >= 2; result *= i-=1; end
@@ -29,7 +29,7 @@ def factorial_mirah(max:int)
       "
 
     builder.mirah "
-      def fib_mirah(n:int)
+      def fib_mirah(n:int):int
         if n < 2
           n
         else
diff --git a/lib/java_inline.rb b/lib/java_inline.rb
index 7ee38c6..e2c62e4 100644
--- a/lib/java_inline.rb
+++ b/lib/java_inline.rb
@@ -1,7 +1,13 @@
+require 'fileutils'
 require 'rubygems'
 require 'inline'
 require 'java'
 
+# make sure the inline cache dir exists
+unless File.exists?(Inline.directory)
+  FileUtils.mkdir_p(Inline.directory)
+end
+
 # Add the inline cache dir to CLASSPATH
 $CLASSPATH << Inline.directory
 
diff --git a/lib/mirah_inline.rb b/lib/mirah_inline.rb
index 0a3167c..0d1aed8 100644
--- a/lib/mirah_inline.rb
+++ b/lib/mirah_inline.rb
@@ -1,8 +1,14 @@
+require 'fileutils'
 require 'rubygems'
 require 'inline'
 require 'java'
 require 'mirah'
 
+# make sure the inline cache dir exists
+unless File.exists?(Inline.directory)
+  FileUtils.mkdir_p(Inline.directory)
+end
+
 # Add the inline cache dir to CLASSPATH
 $CLASSPATH << Inline.directory
 
@@ -36,7 +42,7 @@ def import(cls)
 
     # Add a Java method to the built Java source. This expects the method to
     # be public and static, so it can be called as a function.
-    def duby(src)
+    def mirah(src)
       @src << src << "\n"
       signature = src.match(/def ([a-zA-Z0-9_]+)\((.*)\)/)
       raise "Could not parse method signature" unless signature
@@ -55,7 +61,7 @@ class #{@name}
         end
       "
 
-      File.open(filename, "w") {|file| file.write(full_src)}
+      File.open("#{Inline.directory}/#{filename}", "w") {|file| file.write(full_src)}
       Dir.chdir(Inline.directory) do
         ::Mirah.compile(filename)
       end
diff --git a/lib/scala_inline.rb b/lib/scala_inline.rb
index 6cec5e1..845c172 100644
--- a/lib/scala_inline.rb
+++ b/lib/scala_inline.rb
@@ -1,8 +1,14 @@
+require 'fileutils'
 require 'rubygems'
 require 'inline'
 require 'java'
 include_class Java::java.lang.System
 
+# make sure the inline cache dir exists
+unless File.exists?(Inline.directory)
+  FileUtils.mkdir_p(Inline.directory)
+end
+
 # Add the inline cache dir to CLASSPATH
 $CLASSPATH << Inline.directory
 $CLASSPATH << "#{System.getProperty('scala.home')}/lib/scala-compiler.jar"