Bring TF docs up-to-date and make them useful

Includes significant re-organization and more content

Bug: 8440148
Change-Id: I3df611d9eca451737b751a884c9eecac905cc799
diff --git a/scripts/micro-httpd.py b/scripts/micro-httpd.py
index 1cffa08..2292abc 100755
--- a/scripts/micro-httpd.py
+++ b/scripts/micro-httpd.py
@@ -19,7 +19,7 @@
 import os
 
 
-outdir = os.path.join(os.path.dirname(__file__), '..', 'out')
+outdir = os.environ.get('OUTDIR', os.path.join(os.path.dirname(__file__), '..', 'out'))
 os.chdir(outdir)
 PORT = int(os.environ.get('HTTP_PORT', 8080))
 Handler = SimpleHTTPServer.SimpleHTTPRequestHandler