Added README for async callout. Removed unnecessary text from base64 …

…README.

sample-proxies/async-callout/README.md

@@ -0,0 +1,52 @@
+# Javascript async callout
+
+### Sample use case
+
+Make async callouts where other policies can still process rather than waiting on a response from the callout.
+
+### About
+
+There are two js files, getWeatherData and assembleResponse.  The getWeatherData script makes the http requests, and then they are later accessed in assembleResponse.  The example js code extracted from these files:
+
+first js:
+```
+var paloAlto = httpClient.get('http://weather.yahooapis.com/forecastrss?w=2467861');
+context.session['paloAlto'] = paloAlto;
+```
+
+second js:
+```
+var exchange = context.session['paloAlto'];
+exchange.waitForComplete(1000);
+var resp = exchange.getResponse();
+```
+
+You can parameterize the session names and wrap stuff into functions to make the response parsing/assembling a bit more re-usable.
+
+A critical part to understand in this example is that the delay between the 1st and 2nd JS (including any policies and the waitForComplete) should be long enough for all responses to come back.
+
+### Set up, deploy, invoke
+
+To deploy, run `$ sh deploy.sh`
+
+To test, run `$ sh invoke.sh`
+
+### Ask the community
+
+[![alt text](../../images/apigee-community.png "Apigee Community is a great place to ask questions and find answers about developing API proxies. ")](https://community.apigee.com?via=github)
+
+---
+
+Copyright © 2015 Apigee Corporation
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy
+of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

sample-proxies/base64encoder/README.md

@@ -28,7 +28,9 @@ This demo uses code from the third-party CryptoJS module to do base64 encoding o
 
 ### Set up, deploy, invoke
 
-See the main project [README](../../README.md) file for information about setting up, deploying, and invoking sample proxies.
+To deploy, run `$ sh deploy.sh`
+
+To test, run `$ sh invoke.sh`
 
 >If you open `invoke.sh` take a look at the cURL call:
 >