README.hardware: tweak edgerouter instructions

* You need a rollover cable for the serial port
* Some minor grammar / typo / formatting fixes

(From meta-yocto rev: 79f01604e672ce0eb7af787c27ec561063222796)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

README.hardware

@@ -240,11 +240,12 @@ Load the kernel and dtb (device tree blob), and boot the system as follows:
  => bootm 1000000 - 2000000
 
 
-EdgeRouter Lite(edgerouter)
-=====================================
+Ubiquiti Networks EdgeRouter Lite (edgerouter)
+==============================================
 
-The EdgeRouter Lite is part of the EdgeMax series. It is an MIPS64 router(Cavium Octeon)
-with 512MB of RAM, which uses a USB pendrive for storage.
+The EdgeRouter Lite is part of the EdgeMax series. It is a MIPS64 router
+(based on the Cavium Octeon processor) with 512MB of RAM, which uses an
+internal USB pendrive for storage.
 
 Setup instructions
 ------------------
@@ -252,8 +253,8 @@ Setup instructions
 You will need the following:
 * NFS root setup on your workstation
 * TFTP server installed on your workstation
-* Straight-thru 9-conductor serial cable (DB9, M/F) connected from your 
-  PC to UART1
+* RJ45 -> serial ("rollover") cable connected from your PC to the CONSOLE
+  port on the board
 * Ethernet connected to the first ethernet port on the board
 
 --- Preparation ---
@@ -290,16 +291,17 @@ Load the kernel, and boot the system as follows:
 
 --- Booting from USB root ---
 
-NOTE: Since the USB disk is inside the edgerouter box, its inconvenient for us to
-      plug and unplug the USB disk. So in the following instructions I assume that
-	  you already boot the box from NFS. Additionally, since vmlinux is not installed
-	  to core-minal-image-xxx by default, so its neccessary for us to copy it to USB
-	  disk.
+NOTE: Since the USB disk is inside the edgerouter box, it's inconvenient to
+      plug and unplug the USB disk. So in the following instructions it is
+      assumed that you have already booted the device from NFS. Additionally,
+      since vmlinux is not contained in core-image-xxx by default, it is
+      necessary to copy it to the USB disk separately.
 
 Load the kernel, and boot the system as follows:
- 1. Booting from NFS root
 
- 2. Mount usb disk partition 2 and then extract the contens of
+ 1. Boot from NFS root
+
+ 2. Mount the USB disk partition 2 and then extract the contents of
     tmp/deploy/core-image-XXXX.tar.bz2 into it.
 
     Before starting, copy core-image-minimal-xxx.tar.bz2 and vmlinux into
@@ -314,10 +316,12 @@ Load the kernel, and boot the system as follows:
     # reboot
 
  3. Reboot the board and press a key on the terminal when prompted to get to the U-Boot
-    command line
+    command line:
+
     # reboot
 
  4. Load the kernel and boot:
 
  => ext2load usb 0:2 $loadaddr boot/vmlinux
  => bootoctlinux $loadaddr coremask=0x3 root=/dev/sda2 rw rootwait mtdparts=phys_mapped_flash:512k(boot0),512k(boot1),64k@3072k(eeprom)
+