Merge branch 'phantomjs-2-1-1-prepare-docs-update' into 'master'

Updated prepare.md with new phantomjs version (2.1.1)



See merge request !182

doc/prepare.md

@@ -33,7 +33,7 @@ brew tap homebrew/dupes
 brew tap homebrew/versions
 brew install git redis postgresql libiconv icu4c pkg-config cmake nodejs go openssl node npm
 bundle config build.eventmachine --with-cppflags=-I/usr/local/opt/openssl/include
-npm install phantomjs@1.9.8 -g
+npm install phantomjs-prebuilt@2.1.12 -g
 ```
 ### Ubuntu
@@ -46,7 +46,8 @@ sudo apt-get install software-properties-common python-software-properties
 # This PPA contains an up-to-date version of Go
 sudo apt-add-repository -y ppa:ubuntu-lxc/lxd-stable
 sudo apt-get update
-sudo apt-get install git postgresql postgresql-contrib libpq-dev phantomjs redis-server libicu-dev cmake g++ nodejs libkrb5-dev golang ed pkg-config
+sudo apt-get install git postgresql postgresql-contrib libpq-dev redis-server libicu-dev cmake g++ nodejs libkrb5-dev golang ed pkg-config
+npm install phantomjs-prebuilt@2.1.12 -g
 ```
 ### Arch Linux
@@ -54,7 +55,8 @@ sudo apt-get install git postgresql postgresql-contrib libpq-dev phantomjs redis
 Please read [the prerequisites for all platforms](#prerequisites-for-all-platforms).
 ```
-pacman -S postgresql phantomjs redis postgresql-libs icu nodejs ed cmake openssh git go
+pacman -S postgresql redis postgresql-libs icu nodejs ed cmake openssh git go
+npm install phantomjs-prebuilt@2.1.12 -g
 ```
 ### Debian
@@ -71,7 +73,7 @@ compiler as well: `sudo apt-get install golang`.
 You need to install phantomjs manually:
 ```
-PHANTOM_JS="phantomjs-1.9.8-linux-x86_64"
+PHANTOM_JS="phantomjs-2.1.1-linux-x86_64"
 cd ~
 wget https://bitbucket.org/ariya/phantomjs/downloads/$PHANTOM_JS.tar.bz2
 tar -xvjf $PHANTOM_JS.tar.bz2