Reword "Basic Types" intro to include strings (JetBrains#797)

yole · yole · commit a2f667587afa · 2017-07-17T12:52:37.000+02:00
diff --git a/pages/docs/reference/basic-types.md b/pages/docs/reference/basic-types.md
@@ -7,7 +7,10 @@ title: "Basic Types"
 
 # Basic Types
 
-In Kotlin, everything is an object in the sense that we can call member functions and properties on any variable. Some types are built-in, because their implementation is optimized, but to the user they look like ordinary classes. In this section we describe most of these types: numbers, characters, booleans and arrays.
+In Kotlin, everything is an object in the sense that we can call member functions and properties on any variable.
+Some of the types can have a special internal representation - for example, numbers, characters and booleans can be
+represented as primitive values at runtime - but to the user they look like ordinary classes. 
+In this section we describe the basic types used in Kotlin: numbers, characters, booleans, arrays, and strings.
 
 ## Numbers
 
