added code examples documentation

Author: danvegeto

doc/examples.md

@@ -0,0 +1,162 @@
+#PipelineScript Examples
+
+###print
+
+PipelineScript
+```
+print "hello world"
+```
+
+Java
+```java
+System.out.println("hello world");
+```
+
+Output
+```
+hello world
+```
+
+###var_text
+
+PipelineScript
+```
+text x = "foobar"
+print x
+```
+
+Java
+```java
+String x = "foobar";
+System.out.println(x);
+```
+
+Output
+```
+foobar
+```
+
+###var_num
+
+PipelineScript
+```
+num x = 42
+print x
+```
+
+Java
+```java
+double x = 42;
+System.out.println(x);
+```
+
+Output
+```
+42.0
+```
+
+###arith_add
+
+PipelineScript
+```
+num x = 4
+num y = 2
+print x + y
+```
+
+Java
+```java
+double x = 4;
+double y = 2;
+System.out.println(x + y);
+```
+
+Output
+```
+6.0
+```
+
+###arith_sub
+
+PipelineScript
+```
+num x = 4
+num y = 2
+print x + y
+```
+
+Java
+```java
+double x = 4;
+double y = 2;
+System.out.println(x - y);
+```
+
+Output
+```
+2.0
+```
+
+###arith_mult
+
+PipelineScript
+```
+num x = 4
+num y = 2
+print x * y
+```
+
+Java
+```java
+double x = 4;
+double y = 2;
+System.out.println(x * y);
+```
+
+Output
+```
+8.0
+```
+
+###arith_div
+
+PipelineScript
+```
+num x = 4
+num y = 2
+print x / y
+```
+
+Java
+```java
+double x = 4;
+double y = 2;
+System.out.println(x / y);
+```
+
+Output
+```
+2.0
+```
+
+###text_concat
+
+PipelineScript
+```
+text x = "foo"
+text y = "bar"
+print x + " " + y
+```
+
+Java
+```java
+String x = "foo";
+String y = "bar";
+System.out.println(x + " " + y);
+```
+
+Output
+```
+foo bar
+```
+