Another try of a smoother intro what Chisel is

Incorporated suggestions from @edwardcwang

Author: schoeberl

README.md

@@ -1,6 +1,10 @@
 # Chisel3
-Chisel3 is a new Firrtl based chisel.
-It is currently in BETA VERSION, so some Chisel features may change in the coming months.
+
+Chisel is a new hardware construction language to support adavanced hardware design and circuit generation.
+The latest version of [Chisel](https://chisel.eecs.berkeley.edu/) is Chisel3,
+which uses Firrtl as an intermediate hardware representation language.
+
+Chisel3 is currently in BETA VERSION, so some Chisel features may change in the coming months.
 
 Please visit the [Wiki](https://github.com/ucb-bar/chisel3/wiki) for a more
 detailed description.