[xenserver|docs] added some color!, minor format fixes

lib/fog/xenserver/examples/storage_repositories.md

@@ -6,75 +6,89 @@ http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=SR
 
 Create the XenServer connection first, as usual:
 
-    require 'fog'                                                               
-    require 'net/scp'
-    require 'pp'
-    
-    xenserver = Fog::Compute.new({
-      :provider => 'XenServer',
-      :xenserver_url => 'xenserver-test',
-      :xenserver_username => 'root',
-      :xenserver_password => 'secret',
-    })
+```ruby
+require 'fog'                                                               
+require 'net/scp'
+require 'pp'
 
+xenserver = Fog::Compute.new({
+  :provider => 'XenServer',
+  :xenserver_url => 'xenserver-test',
+  :xenserver_username => 'root',
+  :xenserver_password => 'secret',
+})
+```
 
-Listing the available storage repositories 
+Listing the available storage repositories:
 
-    xenserver.storage_repositories
+```ruby
+xenserver.storage_repositories
+```
 
 
 Filter storage repositories by content type:
 
-    xenserver.storage_repositories.select { |sr| sr.content_type == 'iso' }
+```ruby
+xenserver.storage_repositories.select { |sr| sr.content_type == 'iso' }
+```
 
 Filter storage repositories by allowed operations:
 
-    rw_srs = xenserver.storage_repositories.select do |sr| 
-      # Are we allowed to create a VDI here?
-      sr.allowed_operations.include? 'vdi_create'
-    end
+```ruby
+rw_srs = xenserver.storage_repositories.select do |sr| 
+  # Are we allowed to create a VDI here?
+  sr.allowed_operations.include? 'vdi_create'
+end
+```
 
 Print some attributes of the first SR found:
 
-    sr = rw_srs.first
-    puts sr.name
-    puts sr.description
-    puts sr.type
-    puts sr.tags
-    # in bytes
-    puts sr.physical_size
-    puts sr.physical_utilisation
-    # sum of virtual_sizes of all VDIs in this storage repository (in bytes)
-    puts sr.virtual_allocation
+```ruby
+sr = rw_srs.first
+puts sr.name
+puts sr.description
+puts sr.type
+puts sr.tags
+# in bytes
+puts sr.physical_size
+puts sr.physical_utilisation
+# sum of virtual_sizes of all VDIs in this storage repository (in bytes)
+puts sr.virtual_allocation
+```
 
- 
 List virtual disk images available and print some VDI's attributes:
 
-    sr.vdis.each do |vdi|
-      # http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=VDI
-      puts vdi.uuid
-      puts vdi.is_a_snapshot
-      puts vdi.name
-      # in bytes
-      puts vdi.physical_utilisation
-      puts vdi.virtual_size
-      puts vdi.read_only
-      # ["update", "resize", "destroy", "clone", "copy", "snapshot"],
-      puts vdi.allowed_operations 
-    end
+```ruby
+sr.vdis.each do |vdi|
+  # http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=VDI
+  puts vdi.uuid
+  puts vdi.is_a_snapshot
+  puts vdi.name
+  # in bytes
+  puts vdi.physical_utilisation
+  puts vdi.virtual_size
+  puts vdi.read_only
+  # ["update", "resize", "destroy", "clone", "copy", "snapshot"],
+  puts vdi.allowed_operations 
+end
+```
 
 Create a new VDI in this storage repository:
 
-    vdi = xenserver.vdis.create :name => 'super-vdi',                                       
-                                :storage_repository => sr,                               
-                                :description => 'my super-vdi',                             
-                                :virtual_size => '1073741824' # 1 GB
+```ruby
+vdi = xenserver.vdis.create :name => 'super-vdi',
+                            :storage_repository => sr,
+                            :description => 'my super-vdi',
+                            :virtual_size => '1073741824' # 1 GB
+```
 
 I have an ext3 storage repository and this creates a 1GB VHD file there:
 
     [root@xenserver ~]# vhd-util query -v -n /var/run/sr-mount/6edd263a-2da1-7533-840c-768417b5be25/4050057d-a3a8-4c00-8f2e-cf5531232921.vhd
     1024
 
-Destroy it
+Destroy the VDI:
 
-    vdi.destroy
+```ruby
+vdi.destroy
+```