Update references remove refs to treeder oracle funcy (#376)

* Remove lots of refs to iron and funcy oracle etc..

* more ref replacements

* Replacing more refs. Treeder

* Use Fn not FN

examples/checker/Dockerfile

@@ -1,4 +1,4 @@
-FROM funcy/ruby:dev
+FROM fnproject/ruby:dev
 
 WORKDIR /function
 ADD Gemfile* /function/

examples/checker/README.md

@@ -4,7 +4,7 @@ This images compares the payload info with the header.
 
 ## Requirements
 
-- Oracle Functions API
+- Fn API
 
 ## Development
 
@@ -35,7 +35,7 @@ docker push $USERNAME/func-checker
 ./test.sh
 ```
 
-## Running it on Oracle Functions
+## Running it on Fn
 
 ### Let's define some environment variables
 
@@ -45,7 +45,7 @@ docker push $USERNAME/func-checker
 FUNCAPI=YOUR_FUNCTIONS_ADDRESS
 ```
 
-### Running with Oracle Functions
+### Running with Fn
 
 With this command we are going to create an application with name `checker`.
 
@@ -71,7 +71,7 @@ curl -X POST --data '{
 
 #### Testing function
 
-Now that we created our Oracle Functions route, let's test our new route
+Now that we created our Fn route, let's test our new route
 
 ```
 curl -X POST --data '{ "env_vars": { "test": "1" } }' http://$FUNCAPI/r/checker/check

examples/checker/function.rb

@@ -8,23 +8,23 @@ puts "payload #{payload}"
 p ENV
 if payload != ""
   payload = JSON.parse(payload)
-  
+
   # payload contains checks
-  if payload["env_vars"] 
+  if payload["env_vars"]
     payload["env_vars"].each do |k,v|
-      if ENV[k] != v 
+      if ENV[k] != v
         raise "Env var #{k} does not match"
       end
-    end 
+    end
   end
   puts "all good"
 end
 
-# Also check for expected env vars: https://gitlab.oracledx.com/odx/functions/blob/master/docs/writing.md#inputs
+# Also check for expected env vars: https://github.com/fnproject/fn/blob/master/docs/writing.md#inputs
 e = ENV["FN_REQUEST_URL"]
 puts e
 uri = URI.parse(e)
-if !uri.scheme.start_with?('http') 
+if !uri.scheme.start_with?('http')
   raise "invalid REQUEST_URL, does not start with http"
 end
 e = ENV["FN_METHOD"]