List "Release" as the default build option (#770)
This was set back in commit cea44f475af10c6fde85d4906111a39818e3f134
Fixes #760
diff --git a/emsdk.py b/emsdk.py
index 97a3fd2..bf4986a 100644
--- a/emsdk.py
+++ b/emsdk.py
@@ -2806,7 +2806,7 @@
--build=<type>: Controls what kind of build of LLVM to
perform. Pass either 'Debug', 'Release',
'MinSizeRel' or 'RelWithDebInfo'. Default:
- 'RelWithDebInfo'.
+ 'Release'.
--generator=<type>: Specifies the CMake Generator to be used
during the build. Possible values are the