Update Linux build instructions in Packages/README.md.

Author: timburks

Packages/README.md

@@ -8,62 +8,67 @@ Follow these steps to build and run them on Linux.
 ## Prerequisites
 
 These instructions are for running in the Docker container manager,
-but can be directly used on any Ubuntu 14.04 image.
+but can be directly used on any Ubuntu 16.04 image.
 
 ## Start Docker
 
 Start a docker instance with the following command:
 
-`docker run -i -t --privileged=true ubuntu:14.04 /bin/bash`
+`docker run -i -t --privileged=true ubuntu:16.04 /bin/bash`
 
 ## Install Dependencies
 
     # update package list
     apt-get update
     # install download tools
-    apt-get install git wget -y
+    apt-get install -y git wget
+    # install a few useful utilities
+    apt-get install -y vim sudo
     # install grpc build dependencies
-    apt-get install build-essential autoconf libtool -y 
+    apt-get install -y build-essential autoconf libtool
     # install swift dependencies
-    apt-get install clang libicu-dev libedit-dev python-dev libxml2-dev -y
+    apt-get install -y clang libicu-dev libedit-dev python-dev libxml2-dev
+    # install networking dependencies
+    apt-get install -y libcurl4-openssl-dev
 
 ## Install Swift
 
     # go to /root
-    cd 
+    cd
     # download and unpack swift
-    wget https://swift.org/builds/swift-3.0-preview-3/ubuntu1404/swift-3.0-PREVIEW-3/swift-3.0-PREVIEW-3-ubuntu14.04.tar.gz
-    tar xzf swift-3.0-PREVIEW-3-ubuntu14.04.tar.gz
+    wget https://swift.org/builds/swift-3.0.1-release/ubuntu1604/swift-3.0.1-RELEASE/swift-3.0.1-RELEASE-ubuntu16.04.tar.gz
+    tar xzf swift-3.0.1-RELEASE-ubuntu16.04.tar.gz
+    ln -s swift-3.0.1-RELEASE-ubuntu16.04 swift
 
 ## Add Swift to your path
+    # add swift to your path by adding this to your .bashrc
+    export PATH=/root/swift/usr/bin:$PATH
 
-	# add swift to your path by adding this to your .bashrc
-	export SWIFT=swift-3.0-PREVIEW-3-ubuntu14.04
-	export PATH=/root/$SWIFT/usr/bin:$PATH
-
-	# Then run this to update your path
-	source ~/.bashrc
+    # Then run this to update your path
+    source ~/.bashrc
 
 ## Configure git
 
-	git config --global user.email <your email address>
-	git config --global user.name "<your name>"
+    git config --global user.email <your email address>
+    git config --global user.name "<your name>"
 
 ## Fetch and build grpc
-	git clone https://github.com/timburks/grpc 
-	cd grpc
-	git submodule update --init
-	git checkout swift
-	make
-	make install
+    git clone https://github.com/grpc/grpc-swift
+    cd grpc-swift
+    git submodule update --init
+    cd third_party/grpc
+    git submodule update --init
+    make
+    make install
 
 ## Build the gRPC packages
-	cd src/swift/Packages/
-	cd CgRPC; make; cd ..
-	cd gRPC; make; cd ..
-	cd Server; make; make install; cd ..
-	cd Client; make; make install; cd ..
-	
+    cd
+    cd grpc-swift/Packages
+    cd CgRPC; make; cd ..
+    cd gRPC; make; cd ..
+    cd Server; make; make install; cd ..
+    cd Client; make; make install; cd ..
+
 It may be necessary to run `make` multiple times in the Server and Client directories.
 If you see an error like the following, please retry running `make`.
 
@@ -77,8 +82,7 @@ If you see an error like the following, please retry running `make`.
     No submodule mapping found in .gitmodules for path 'Packages/CgRPC-1.0.0'
     error: Git 2.0 or higher is required. Please update git and retry.
     make: *** [all] Error 1
-	
+
 ## Run the test client and server from the grpc/src/swift/Packages directory:
-	Server/Server &
-	Client/Client
-	
+    Server/Server &
+    Client/Client