Added core setup to README and improved Vagrant push error messages

Author: fblundun

README.md

@@ -31,6 +31,8 @@ Assuming git, [Vagrant] [vagrant-install] and [VirtualBox] [virtualbox-install]
  host$ vagrant up && vagrant ssh
 guest$ cd /vagrant
 guest$ sudo npm install
+guest$ cd core
+guest$ sudo npm install
 ```
 
 Set up an `./aws.json` file using the example `./aws.sample.json`. If you just want to concat + minify without uploading then you don't need to fill out the `aws.json` file with valid credentials.

vagrant/push/publish-core.bash

@@ -43,7 +43,7 @@ function get_core_version {
 
 	# Extract the version from package.json using Node and save it in a file named "VERSION"
 	vagrant ssh -c "cd /vagrant/core && node -e \"var fs=require('fs');fs.readFile('./package.json', 'utf8', function(e,d){console.log(JSON.parse(d)['version'])});\" > VERSION" \
-	  || die "Failed to get extract version information from package.json"
+	  || die "Failed to extract version information from package.json"
 	file_version=`cat core/VERSION`
 	expected_tag="core-$file_version"
 	tag_version=`git describe --abbrev=0 --tags`

vagrant/push/publish-tracker.bash

@@ -43,7 +43,7 @@ function get_version {
 
 	# Extract the version from package.json using Node and save it in a file named "VERSION"
 	vagrant ssh -c "cd /vagrant && node -e \"var fs=require('fs');fs.readFile('./package.json', 'utf8', function(e,d){console.log(JSON.parse(d)['version'])});\" > VERSION" \
-	  || die "Failed to get extract version information from package.json"
+	  || die "Failed to extract version information from package.json"
 	file_version=`cat VERSION`
 	tag_version=`git describe --abbrev=0 --tags`
 	if [ ${file_version} != ${tag_version} ] ; then