title: Problems in installing Laravel Envoy with composer
body: <p>When i try to install laravel envoy and run this command: </p>
  
  <p>composer global require "laravel/envoy=~1.0"</p>
  
  <p>I received this answer in terminal:</p>
  
  <pre><code>Your requirements could not be resolved to an installable set of packages.
  
    Problem 1
      - Conclusion: don't install laravel/envoy v1.1.0
      - Conclusion: don't install laravel/envoy v1.0.27
      - Conclusion: don't install laravel/envoy v1.0.26
      - Conclusion: don't install laravel/envoy v1.0.25
      - Conclusion: don't install laravel/envoy v1.0.24
      - Conclusion: don't install laravel/envoy v1.0.23
      - Conclusion: don't install laravel/envoy v1.0.22
      - Conclusion: don't install laravel/envoy v1.0.21
      - Conclusion: don't install laravel/envoy v1.0.20
      - Conclusion: don't install laravel/envoy v1.0.19
      - Conclusion: don't install laravel/envoy v1.0.18
      - Conclusion: don't install laravel/envoy v1.0.17
      - Conclusion: don't install laravel/envoy v1.0.16
      - Conclusion: don't install laravel/envoy v1.0.15
      - Conclusion: don't install laravel/envoy v1.0.14
      - Conclusion: don't install laravel/envoy v1.0.13
      - Conclusion: don't install laravel/envoy v1.0.12
      - Conclusion: don't install laravel/envoy v1.0.11
      - Conclusion: don't install laravel/envoy 1.0.5
      - Conclusion: don't install laravel/envoy 1.0.3
      - Conclusion: don't install laravel/envoy 1.0.2
      - Conclusion: remove symfony/process v3.0.4
      - Installation request for laravel/envoy ~1.0 -&gt; satisfiable by laravel/envoy[1.0.0, 1.0.2, 1.0.3, 1.0.5, v1.0.11, v1.0.12, v1.0.13, v1.0.14, v1.0.15, v1.0.16, v1.0.17, v1.0.18, v1.0.19, v1.0.20, v1.0.21, v1.0.22, v1.0.23, v1.0.24, v1.0.25, v1.0.26, v1.0.27, v1.1.0].
      - Conclusion: don't install symfony/process v3.0.4
      - laravel/envoy 1.0.0 requires symfony/process 2.4.* -&gt; satisfiable by symfony/process[v2.4.0, v2.4.1, v2.4.10, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9].
      - Can only install one of: symfony/process[v2.4.0, v3.0.4].
      - Can only install one of: symfony/process[v2.4.1, v3.0.4].
      - Can only install one of: symfony/process[v2.4.10, v3.0.4].
      - Can only install one of: symfony/process[v2.4.2, v3.0.4].
      - Can only install one of: symfony/process[v2.4.3, v3.0.4].
      - Can only install one of: symfony/process[v2.4.4, v3.0.4].
      - Can only install one of: symfony/process[v2.4.5, v3.0.4].
      - Can only install one of: symfony/process[v2.4.6, v3.0.4].
      - Can only install one of: symfony/process[v2.4.7, v3.0.4].
      - Can only install one of: symfony/process[v2.4.8, v3.0.4].
      - Can only install one of: symfony/process[v2.4.9, v3.0.4].
      - Installation request for symfony/process == 3.0.4.0 -&gt; satisfiable by symfony/process[v3.0.4].
  </code></pre>
  
  <p>My composer.json file in ~/.composer:</p>
  
  <pre><code>{
      "require": {
          "laravel/installer": "^1.3"
      }
  }
  </code></pre>
  
  <p>I am using Laravel 5.2.</p>