Update version requirement and fix Travis

.travis.yml

@@ -5,10 +5,8 @@ before_install:
   - gem update --system
   - rvm @global do gem uninstall -ax bundler
   - gem uninstall -ax bundler
-  - gem install bundler -v 1.5.3
+  - gem install bundler -v 1.10.5
 env:
-  global:
-    - SPEC_OPTS="--tag ~skip_travis"
   matrix:
     - VAGRANT_VERSION=v1.8.1
 matrix:
@@ -17,16 +15,6 @@ matrix:
       rvm: 2.2.3
     - env: VAGRANT_VERSION=v1.7.4
       rvm: 2.0.0
-    - env: VAGRANT_VERSION=v1.6.5
-      rvm: 2.0.0
-    - env: VAGRANT_VERSION=v1.5.4
-      rvm: 2.0.0
-    - env: VAGRANT_VERSION=v1.4.3
-      rvm: 2.0.0
-    - env: VAGRANT_VERSION=v1.3.5
-      rvm: 1.9.3
-    - env: VAGRANT_VERSION=v1.2.7
-      rvm: 1.9.3
   allow_failures:
     - env: VAGRANT_VERSION=master
       rvm: 2.2.3

README.md

@@ -6,13 +6,16 @@ Allow the definition of arbitrary scripts that will run on the host or guest bef
 
 ## Installation
 
-Ensure you have downloaded and installed Vagrant 1.2+ from the
+Ensure you have downloaded and installed Vagrant from the
 [Vagrant downloads page](http://downloads.vagrantup.com/).
 
 Installation is performed in the prescribed manner for Vagrant plugins:
 
     $ vagrant plugin install vagrant-triggers
 
+:warning: Altough the plugin should work with any version of Vagrant above 1.2,
+testing is done only for versions 1.7+.
+
 ## Example Usage
 
 ```ruby