documentation/dev-manual: Incorporated Joshua Lock's review comments.

(From yocto-docs rev: d4bf6343d7575ff96030242e2025570db52b515b)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/dev-manual-start.xml

@@ -24,15 +24,16 @@
 
     <para>
         The Yocto Project is an open-source collaboration project focused on embedded Linux development.  
-        The project provides a recent Linux kernel along with a set of system commands, libraries, 
-        and system components suitable for the embedded developer.  
-        The Yocto Project also features the Sato reference User Interface should you be dealing with 
-        devices with restricted screens.
+        The project currently provides a build system and various ancillary tools suitable for the 
+        embedded developer.  
+        The Yocto Project also features the Sato reference User Interface, which is optimized for 
+        stylus driven, low-resolution screens.
     </para>
 
     <para>
         You can use the Yocto Project, which uses the BitBake build tool, to develop complete Linux 
-        images and user-space applications for architectures based on ARM, MIPS, PowerPC, x86 and x86-64.  
+        images and associated user-space applications for architectures based on ARM, MIPS, PowerPC, 
+        x86 and x86-64.  
         You can perform target-level testing and debugging as well as test in a hardware emulated environment.  
         And, if you are an Eclipse user, you can install an Eclipse Yocto Plug-in to allow you to 
         develop within that familiar environment.
@@ -45,16 +46,18 @@
     <para>
         Here is what you need to get set up to use the Yocto Project:
         <itemizedlist>
-            <listitem><para><emphasis>Host System:</emphasis>  You need a recent release of Fedora, 
-                OpenSUSE, Debian, or Ubuntu.  
-                You should have a reasonably current Linux-based host system.  
+            <listitem><para><emphasis>Host System:</emphasis>  You should have a reasonably current 
+                Linux-based host system.
+                You will have the best results with a recent release of Fedora, 
+                OpenSUSE, or Ubuntu as these releases are frequently tested and officially supported 
+                host systems.  
                 You should also have about 100 gigabytes of free disk space for building images.
                 </para></listitem>
             <listitem><para><emphasis>Packages:</emphasis>  The Yocto Project requires certain packages
-                exist on your development system.  
-                See the <ulink url='http://www.yoctoproject.org/docs/yocto-quick-start/yocto-project-qs.html#packages'>
+                exist on your development system (e.g. Python 2.6 or 2.7).  
+                See <ulink url='http://www.yoctoproject.org/docs/yocto-quick-start/yocto-project-qs.html#packages'>
                 The Packages</ulink> section in the Yocto Project Quick start for the exact package 
-                requirements.</para></listitem>
+                requirements and the installation commands for the supported distributions.</para></listitem>
             <listitem id='local-yp-release'><para><emphasis>Yocto Project Release:</emphasis>  
                 You need a release of the Yocto Project.  
                 You can get set up with local Yocto Project files one of two ways depending on whether you 
@@ -210,7 +213,8 @@
                         wiki page</ulink> referenced earlier covers how to 
                         set up the <filename>meta-intel</filename> Git repository.</para></listitem>
                 </itemizedlist></para></listitem>
-            <listitem><para><emphasis>Eclipse Yocto Plug-in:</emphasis>  If you are developing using the 
+            <listitem><para><emphasis>Eclipse Yocto Plug-in:</emphasis>  If you are developing 
+                applications using the 
                 Eclipse Integrated Development Environment (IDE) you will need this plug-in.  
                 See the 
                 <ulink url='http://www.yoctoproject.org/docs/adt-manual/adt-manual.html#setting-up-the-eclipse-ide'>
@@ -237,7 +241,7 @@
                 previous section.</para></listitem>
             <listitem><para>Initialize the build environment by sourcing a build environment 
                 script.</para></listitem>
-            <listitem><para>Make sure the <filename>conf/local.conf</filename> configuration file is set 
+            <listitem><para>Optionally ensure the <filename>conf/local.conf</filename> configuration file is set 
                 up how you want it.  
                 This file defines the target machine architecture and and other build options.</para></listitem>
             <listitem><para>Build the image using the BitBake command.