Improve checks in bin/setup

bin/setup

@@ -10,6 +10,10 @@ has_ruby() {
   command_exists "ruby" && ruby -v | grep -q "$1"
 }
 
+has_qmake() {
+  command_exists "qmake" && qmake -v | grep -q "$1"
+}
+
 error_title() {
   echo "\033[31m == $1 ==\033[0m"
 }
@@ -19,7 +23,7 @@ link() {
 }
 
 # Check for qmake
-if ! command_exists "qmake"; then
+if ! has_qmake "4.8"; then
   exec >&2
   error_title "We use capybara-webkit for testing our app"
   echo "capybara-webkit depends on a WebKit implementation from Qt."
@@ -42,7 +46,7 @@ if ! command_exists "psql"; then
 fi
 
 # Check Ruby 2.0 is installed.
-if ! has_ruby "2.0"; then
+if ! has_ruby "2.*"; then
   exec >&2
   error_title "The application runs on Ruby 2.0"
   echo "In order to get the app running, you first need to install Ruby 2.0."