Convert README to Markdown

README.txt → README.md

@@ -1,19 +1,18 @@
-Apache Pig
-===========
+# Apache Pig
+
 Pig is a dataflow programming environment for processing very large files. Pig's
 language is called Pig Latin. A Pig Latin program consists of a directed
 acyclic graph where each node represents an operation that transforms data.
 Operations are of two flavors: (1) relational-algebra style operations such as
 join, filter, project; (2) functional-programming style operators such as map,
 reduce. 
 
-Pig compiles these dataflow programs into (sequences of) map-reduce or Apache Tez
-jobs and executes them using Hadoop. It is also possible to execute Pig Latin
-programs in a "local" mode (without Hadoop cluster), in which case all 
-processing takes place in a single local JVM. 
+Pig compiles these dataflow programs into (sequences of) map-reduce or 
+[Apache Tez](https://tez.apache.org/) jobs and executes them using Hadoop. It is 
+also possible to execute Pig Latin programs in a "local" mode (without Hadoop 
+cluster), in which case all processing takes place in a single local JVM. 
 
-General Info
-===============
+## General Info
 
 For the latest information about Pig, please visit our website at:
 
@@ -23,17 +22,16 @@ and our wiki, at:
 
    https://cwiki.apache.org/confluence/display/PIG/Index
 
-Getting Started
-===============
+## Getting Started
+
 1. To learn about Pig, try https://cwiki.apache.org/confluence/display/PIG/PigTutorial
 2. To build and run Pig, try http://wiki.apache.org/pig/BuildPig and
 http://wiki.apache.org/pig/RunPig
 3. To check out the function library, try
 https://cwiki.apache.org/confluence/display/PIG/PiggyBank
 
 
-Contributing to the Project
-===========================
+## Contributing to the Project
 
 We welcome all contributions. For the details, please, visit
 https://cwiki.apache.org/confluence/display/PIG/HowToContribute