Merge pull request #201 from arjenz/patch-1

Spelling

Author: pmcmaw

README.md

@@ -104,7 +104,7 @@ lvm::volume_groups:
         mountpath: /var/backups
         mountpath_require: true
 ```
-or to just build the VG if it does not exists
+or to just build the VG if it does not exist
 ```yaml
 ---
 lvm::volume_groups:
@@ -144,8 +144,8 @@ resources out yourself.
 ## Optional Values
   The `unless_vg` (physical_volume) and `createonly` (volume_group) will check 
   to see if "myvg" exists.  If "myvg" does exist then they will not modify
-  the physical volume or volume_group.  This is usefull if you environment
-  is build with certain disks but they change while the server grows, shrinks
+  the physical volume or volume_group.  This is useful if your environment
+  is built with certain disks but they change while the server grows, shrinks
   or moves.
 
   Example: