Update WPR documentation

BUG=web-page-replay:#89

Review-Url: https://codereview.chromium.org/2835923003 .

Author: nedn

README.md

@@ -25,4 +25,4 @@ code](https://docs.google.com/document/d/1cehHn3Lig7UYw_7pqQJjkbPTV3kS11EYwjKO-6
 If you find issues with the project, you can file issues on this repo.
 If you want to do more and contribute code to help the project evolve,
 check out our [contribution
-guidelines](documentation/Contributing.md). 
+guidelines](documentation/Contributing.md).

documentation/GettingStarted.md

@@ -14,43 +14,11 @@ $ git clone https://github.com/chromium/web-page-replay.git
 ```
 $ cd web-page-replay
 ```
-## Linux-specific install steps
-On Linux, Dummynet must be installed to simulate network conditions.
-
-1. For the Linux code, try downloading the [latest linux sources from Marta
-Carbone](http://info.iet.unipi.it/~marta/dummynet/). These are more up-to-date than what is found on the [Dummynet
-homepage](http://info.iet.unipi.it/~luigi/dummynet/).
-2. Build and install:
-```
-$ tar -C /tmp -xvzf ipfw3-20120119.tgz
-$ cd /tmp/ipfw3-20120119
-$ make
-[Ignore output like the following:]
-        echo "  ERROR: Kernel configuration is invalid.";\
-        echo "         include/generated/autoconf.h or
-include/config/auto.conf are missing.";\
-        echo "         Run 'make oldconfig && make prepare' on kernel
-src to fix it.";\
-[The lines will print without "echo" if there is an actual error.]
-$ sudo insmod dummynet2/ipfw_mod.ko
-$ sudo cp ipfw/ipfw /usr/local/sbin
-```
-3. To remove it later
-```
-$ sudo rmmod ipfw_mod.ko
-```
-## Windows-specific install steps
-*Windows support is experimental and not well tested.* On Windows XP, the
-Dummynet driver must be installed to simulate network conditions
-(Drivers for Windows Vista and Windows 7 are currently unavailable).
-
-1. Control Panel -> Network Connections -> Right-click adapter in use ->
-select Properties
-2. Click Install... -> Service -> Add... -> Have Disk...
-3. Browse... ->
-web-page-replay-read-only\third_party\ipfw_win32\netipfw.inf
-4. Click Open -> Ok -> Ok
-  - Accept any warnings for installing an unknown driver
+## Network simulation
+For network simulation, you can use https://github.com/WPO-Foundation/tsproxy
+which works on most platforms. More realistic network simulation options can be
+achieved through using tools like dummynet, but those only support limited
+platforms.
 
 # Record
 First you must record the web page or pages that you wish to replay.