Update installation instructions on web-site

doc/www/content/newsite/download.yml.in

@@ -31,13 +31,13 @@ blocks :
             sudo apt-key add ./public.key
             release=`lsb_release -c -s`
 
-            cat > /etc/apt/sources.list.d/tarantool.list <<- EOF
+            sudo cat > /etc/apt/sources.list.d/tarantool.list <<- EOF
             deb http://tarantool.org/dist/master/ubuntu/ $release main
             deb-src http://tarantool.org/dist/master/ubuntu/ $release main
             EOF
 
             sudo apt-get update
-            sudo apt-get install tarantool
+            sudo apt-get -y install tarantool
     - - "Debian GNU/Linux"
       - format : rst
         content: |
@@ -55,13 +55,13 @@ blocks :
             sudo apt-key add ./public.key
             release=`lsb_release -c -s`
 
-            cat > /etc/apt/sources.list.d/tarantool.list <<- EOF
+            sudo cat > /etc/apt/sources.list.d/tarantool.list <<- EOF
             deb http://tarantool.org/dist/master/debian/ $release main
             deb-src http://tarantool.org/dist/master/debian/ $release main
             EOF
 
             sudo apt-get update
-            sudo apt-get install tarantool
+            sudo apt-get -y install tarantool
     - - "OS X"
       - format : rst
         content: |
@@ -71,38 +71,46 @@ blocks :
 
             $ brew install tarantool
 
-    - - "Fedora 19, 20, 21, 22"
+    - - "Fedora"
       - format : rst
         content: |
-          Fedora repository is available at
+          We maintain an always up-to-date Fedora package repository at
           `<http://tarantool.org/dist/master/fedora>`_
 
-          Add the following section to your yum repository list
-          ``/etc/yum.repos.d/tarantool.repo`` to enable it:
+          It can be added to your yum repos with:
 
-          .. code-block:: ini
+          .. code-block:: bash
 
+            sudo cat > /etc/yum.repos.d/tarantool.repo <<- EOF
             [tarantool]
-            name=Fedora-$releasever - Tarantool
-            baseurl=http://tarantool.org/dist/master/fedora/$releasever/$basearch/
+            name=Fedora-\$releasever - Tarantool
+            baseurl=http://tarantool.org/dist/master/fedora/\$releasever/\$basearch/
             enabled=1
             gpgcheck=0
-    - - "CentOS 5-7 and RHEL 5-7"
+            EOF
+
+            sudo dnf -y install tarantool
+
+    - - "CentOS and RHEL"
       - format : rst
         content: |
-          CentOS and RHEL repository is available at
+          We maintain an always up-to-date CentOS package repository at
           `<http://tarantool.org/dist/master/centos>`_
 
-          Add the following section to your yum repository list
-          ``/etc/yum.repos.d/tarantool.repo`` to enable it:
+          It can be added to your yum repos with:
 
-          .. code-block:: ini
+          .. code-block:: bash
 
+            sudo cat > /etc/yum.repos.d/tarantool.repo <<- EOF
             [tarantool]
-            name=CentOS-$releasever - Tarantool
-            baseurl=http://tarantool.org/dist/master/centos/$releasever/os/$basearch/
+            name=CentOS-\$releasever - Tarantool
+            baseurl=http://tarantool.org/dist/master/centos/\$releasever/\$basearch/
             enabled=1
             gpgcheck=0
+            EOF
+
+            sudo yum -y install tarantool
+
     - - "Gentoo Linux"
       - format : rst
         content: |