Fix broken formatting in README.md

Markdown formatter at:
https://android.googlesource.com/platform/system/bt/
interpret some things differently than other formatters.
This patch fixes badly formatted parts.

Change-Id: Ibe8a9c159d9d47396ef073f6555f06720bc3e661

README.md

@@ -8,6 +8,7 @@ Just build AOSP - Fluoride is there by default.
 Instructions for Ubuntu, tested on 15.10 with GCC 5.2.1.
 
 ### Install required libraries
+
 ```sh
 sudo apt-get install libevent-dev
 ```
@@ -19,6 +20,7 @@ sudo apt-get install libevent-dev
 ```sh
 sudo apt-get install ninja-build
 ```
+
 or download binary from https://github.com/ninja-build/ninja/releases
 
   - Install [gn](https://chromium.googlesource.com/chromium/src/tools/gn/) -  meta-build system that generates NinjaBuild files.
@@ -29,23 +31,30 @@ https://chromium.googlesource.com/chromium/buildtools/+/master/linux64/gn.sha1)
 ```sh
 wget -O gn http://storage.googleapis.com/chromium-gn/<gn.sha1>
 ```
+
 i.e. if sha1 is "3491f6687bd9f19946035700eb84ce3eed18c5fa" (value from 24 Feb 2016) do
+
 ```sh
 wget -O gn http://storage.googleapis.com/chromium-gn/3491f6687bd9f19946035700eb84ce3eed18c5fa
 ```
+
 Then make binary executable and put it on your PATH, i.e.:
+
 ```sh
 chmod a+x ./gn
 sudo mv ./gn /usr/bin
 ```
 
 ### Download source
+
 ```sh
 mkdir ~/fluoride
 cd ~/fluoride
 git clone https://android.googlesource.com/platform/system/bt
 ```
+
 Then fetch third party dependencies:
+
 ```sh
 cd ~/fluoride/bt
 mkdir third_party
@@ -53,6 +62,7 @@ git clone https://github.com/google/googletest.git
 git clone https://android.googlesource.com/platform/external/libchrome
 git clone https://android.googlesource.com/platform/external/modp_b64
 ```
+
 And third party dependencies of third party dependencies:
 
 ```sh
@@ -62,7 +72,9 @@ cd valgrind
 curl https://chromium.googlesource.com/chromium/src/base/+/master/third_party/valgrind/valgrind.h?format=TEXT | base64 -d > valgrind.h
 curl https://chromium.googlesource.com/chromium/src/base/+/master/third_party/valgrind/memcheck.h?format=TEXT | base64 -d > memcheck.h
 ```
-Fluoride currently have dependency on some internal Android projects, which also need to be downloaded. This will be removed in future:
+
+Fluoride currently has dependency on some internal Android projects, which also need to be downloaded. This will be removed in future:
+
 ```sh
 cd ~/fluoride
 git clone https://android.googlesource.com/platform/system/core
@@ -72,12 +84,15 @@ git clone https://android.googlesource.com/platform/system/media
 
 ### Configure your build
 We need to configure some paths to make the build successful. Run:
+
 ```sh
 cd ~/fluoride/bt
 gn args out/Default
 ```
-This will prompt you to fill the contents of your "out/Default/args.gn" file. Make it look like below. Replace "/home/job" with path to your home directory, don't use "~":
-```
+
+This will prompt you to fill the contents of your "out/Default/args.gn" file. Make it look like below. Replace "/home/job" with path to your home directory, and don't use "~" in build arguments:
+
+```sh
 # Build arguments go here. Examples:
 #   is_component_build = true
 #   is_debug = false
@@ -89,6 +104,7 @@ audio_include_path = "/home/job/fluoride/media/audio/include"
 ```
 
 Then generate your build files by calling
+
 ```sh
 cd ~/fluoride/bt
 gn gen out/Default