README.md: remove some v1.7 hardcoding

As requested in issue #46

Signed-off-by: Marc Herbert <marc.herbert@intel.com>

Author: marc-hb

README.md

@@ -4,20 +4,20 @@ the go.sh script is not used anymore. Instead:
 ```
 sudo mv /lib/firmware/intel/sof* some_backup_location/
 sudo mv /usr/local/bin/sof-*     some_backup_location/ # optional
-sudo install.sh v1.7.x/v1.7
+sudo install.sh v1.N.x/v1.N-rcM
 ```
 
 The go.sh script still applies to older releases.
 
 You don't have to use install.sh, you can use any recursive copy of
-your preference. This is all what install.sh does:
+your preference. This is all what install.sh does, example with v1.7.x/v1.7:
 
 ```
 cd v1.7.x
 rsync -a sof*v1.7   /lib/firmware/intel/
 ln -s sof-v1.7      /lib/firmware/intel/sof
 ln -s sof-tplg-v1.7 /lib/firmware/intel/sof-tplg
-rsync tools-v1.7/* /usr/local/bin
+rsync tools-v1.7/*  /usr/local/bin
 ```
 
 If you don't want the symbolic links:
@@ -29,4 +29,4 @@ rsync tools-v1.7/        /usr/local/bin/
 ```
 
 Remember that for rsync (and some versions of `cp`), a trailing slash in
-srcdir/ is rougly equivalent to srcdir/*
+srcdir/ is roughly equivalent to srcdir/* + srcdir/.??*