Adding Kernel Installation to the SW guide (#321)

docs/quickstart/apollo_software_installation_guide.md

@@ -9,6 +9,7 @@ This section includes:
 - [Download the Apollo Release Package](#download-apollo-source)
 - [Set up the Docker environment](#Set-up-the-Docker-environment)
 - [Support a new Vehicle in DreamView](#Support-a-new-Vehicle-in-DreamView)
+- [Install Apollo Kernel](#Install-apollo-kernel)
 - [Run Apollo in Ubuntu 16](#Run-Apollo-in-Ubuntu-16)
 
 Before getting started, please make sure you have installed Ubuntu Linux 14.04.3 and the Apollo Kernel following the steps in the [Apollo core Software Installation Guide](https://github.com/ApolloAuto/apollo/blob/master/docs/quickstart/apollo_1_0_hardware_system_installation_guide.md#installing-the-software-for-the-ipc).
@@ -73,6 +74,51 @@ In order to support a new vehicle in DreamView, please follow the steps below:
 
 3. Restart DreamView and you will be able to see your new vehicle (name is the same as your newly created folder) in the selected vehicle.
 
+## Install Apollo Kernel
+
+The Apollo runtime in the vehicle requires the [Apollo Kernel](https://github.com/ApolloAuto/apollo-kernel). It is strongly recommended to install the pre-built kernel.
+
+### Use the pre-built Apollo Kernel
+
+You get access to and install the pre-built kernel using the following commands.
+
+1. Download the release packages from the release section on GitHub:
+
+```
+https://github.com/ApolloAuto/apollo-kernel/releases
+```
+
+2. Install the kernel after having downloaded the release package:
+
+```
+tar zxvf linux-4.4.32-apollo-1.5.0.tar.gz
+cd install
+sudo bash install_kernel.sh
+```
+
+3. Reboot your system using the `reboot` command.
+4. [Optional - if you are using CAN card for interface] Build the CAN driver source code, according to the vendor's instructions
+
+### Build your own kernel
+
+If you have modified the kernel, or the pre-built kernel is not the best for your platform, you can build your own kernel using the following steps:
+
+1. Clone the code from the repository
+
+```
+git clone https://github.com/ApolloAuto/apollo-kernel.git
+cd apollo-kernel
+```
+
+2. Add the CAN driver source code according to vendor's instruction
+3. Build the kernel using the following command:
+
+```
+bash build.sh
+```
+
+4. Install the kernel using the steps for a pre-built Apollo Kernel as described in the previous section.
+
 ## Run Apollo in Ubuntu 16
 
 Please refer to