Getting Bash-it to use the vendored composure

Fixed tests
Fixed install.sh and bash_it.sh
Added gitattributes to the vendor folder
Changed documentation

test/plugins/alias-completion.plugin.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 
 load ../test_helper
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 load ../../lib/log
 load ../../lib/helpers
 

test/plugins/base.plugin.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 
 load ../test_helper
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 load ../../plugins/available/base.plugin
 
 @test 'plugins base: ips()' {

test/plugins/battery.plugin.bats

@@ -1,7 +1,7 @@
 #!/usr/bin/env bats
 
 load ../test_helper
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 
 cite _about _param _example _group _author _version
 

test/plugins/cmd-returned-notify.plugin.bats

@@ -2,7 +2,7 @@
 
 load ../test_helper
 load ../../lib/helpers
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 
 load ../../plugins/available/cmd-returned-notify.plugin
 

test/plugins/go.plugin.bats

@@ -2,7 +2,7 @@
 
 load ../test_helper
 load ../../lib/helpers
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 
 @test 'ensure _go_pathmunge_wrap is defined' {
   { [[ $CI ]] || _command_exists go; } || skip 'golang not found'

test/plugins/ruby.plugin.bats

@@ -2,7 +2,7 @@
 
 load ../test_helper
 load ../../lib/helpers
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 load ../../plugins/available/ruby.plugin
 
 function local_setup {

test/plugins/xterm.plugin.bats

@@ -2,7 +2,7 @@
 
 load ../test_helper
 load ../../lib/helpers
-load ../../lib/composure
+load "${BASH_IT}/vendor/github.com/erichs/composure/composure.sh"
 
 load ../../plugins/available/xterm.plugin