meson: build: Remove automake files and update READMEs

Tested: Ran CI and code update on witherspoon.

Change-Id: I4d9695cdddf48e4a4d884fb9b8e30108ee6dfe6c
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/.gitignore b/.gitignore
index 89d3696..378eac2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,55 +1 @@
-# Template from:
-# https://github.com/github/gitignore/blob/master/Autotools.gitignore
-
-# http://www.gnu.org/software/automake
-
-Makefile.in
-/ar-lib
-/mdate-sh
-/py-compile
-/test-driver
-/ylwrap
-.dirstamp
-
-# http://www.gnu.org/software/autoconf
-
-/autom4te.cache
-/aclocal.m4
-/compile
-/config.guess
-/config.h.in
-/config.sub
-/configure
-/configure.scan
-/depcomp
-/install-sh
-/missing
-/stamp-h1
-
-# https://www.gnu.org/software/libtool/
-
-/ltmain.sh
-
-# http://www.gnu.org/software/texinfo
-
-/texinfo.tex
-
-# Repo Specific Items
-*.o
-*.trs
-/config.h
-/config.h.in~
-*.log
-/config.status
-/phosphor-version-software-manager
-/phosphor-download-manager
-/phosphor-image-updater
-/phosphor-sync-software-manager
-server.hpp
-server.cpp
-error.hpp
-error.cpp
-Makefile
-.deps
-/test/utest
-*-libtool
+build