Replace mimemagic with mini_magic

.travis.yml

@@ -9,9 +9,6 @@ rvm:
 before_install:
     - gem uninstall -v '>= 2' -i $(rvm gemdir)@global -ax bundler || true
     - gem install bundler -v '< 2'
-    - sudo apt-get update -y
-    - sudo apt-get install -y shared-mime-info
-    - mkdir -p ./usr/share/mime/packages && cp -a /usr/share/mime/packages/freedesktop.org.xml ./usr/share/mime/packages/
 
 after_success:
   - coveralls

README.md

@@ -37,19 +37,6 @@ Or install it yourself as:
 
     $ gem install filestack
 
-## Dependencies
-
-We use the gem `mimemagic` which requires a copy of the Freedesktop.org shared-mime-info database.
-
-macOS users can install the database via Homebrew with `brew install shared-mime-info`.
-
-If you are unable to use a package manager, you can obtain a copy of the needed file by extracting it from the Debian package. This process will also work on a Windows machine.
-
-1. Download the package from https://packages.debian.org/sid/amd64/shared-mime-info/download
-2. Ensure the command line version of 7-Zip is installed
-3. `7z x -so shared-mime-info_2.0-1_amd64.deb data.tar | 7z e -sidata.tar "./usr/share/mime/packages/freedesktop.org.xml"`
-4. Place the file `freedesktop.org.xml` in an appropriate location, and then set the environment variable `FREEDESKTOP_MIME_TYPES_PATH` to that path. Once that has been done the gem should install successfully. Please note that the gem will depend upon the file remaining in that location at run time.
-
 ## Usage
 
 ### Import

docs/FilestackCommon.html

@@ -730,7 +730,7 @@ <h3 class="signature " id="send_overwrite-instance_method">
   <span class='kw'>return</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>Overwrite requires security</span><span class='tstring_end'>&#39;</span></span> <span class='kw'>if</span> <span class='id identifier rubyid_security'>security</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>
 
   <span class='id identifier rubyid_file'>file</span> <span class='op'>=</span> <span class='const'>File</span><span class='period'>.</span><span class='id identifier rubyid_open'>open</span><span class='lparen'>(</span><span class='id identifier rubyid_filepath'>filepath</span><span class='comma'>,</span> <span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>r</span><span class='tstring_end'>&#39;</span></span><span class='rparen'>)</span>
-  <span class='id identifier rubyid_mimetype'>mimetype</span> <span class='op'>=</span> <span class='const'>MimeMagic</span><span class='period'>.</span><span class='id identifier rubyid_by_magic'>by_magic</span><span class='lparen'>(</span><span class='id identifier rubyid_file'>file</span><span class='rparen'>)</span>
+  <span class='id identifier rubyid_mimetype'>mimetype</span> <span class='op'>=</span> <span class='const'>MiniMime</span><span class='period'>.</span><span class='id identifier rubyid_lookup_by_filename'>lookup_by_filename</span><span class='lparen'>(</span><span class='id identifier rubyid_file'>file</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_content_type'>content_type</span>
   <span class='id identifier rubyid_content'>content</span> <span class='op'>=</span> <span class='id identifier rubyid_file'>file</span><span class='period'>.</span><span class='id identifier rubyid_read'>read</span>
 
   <span class='id identifier rubyid_signature'>signature</span> <span class='op'>=</span> <span class='id identifier rubyid_security'>security</span><span class='period'>.</span><span class='id identifier rubyid_signature'>signature</span>