[ci skip] Update script and readme

README.rst

@@ -54,8 +54,8 @@ Initialize with script
 
    $ curl -s https://raw.githubusercontent.com/lord63/tldr.py/master/install.sh | bash
 
-Initialize by hand
-~~~~~~~~~~~~~~~~~~
+Or you can initialize by hand
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 -  firstly, clone the tldr repo to somewhere(e.g. ~/code/tldr). We will
    use it when we look for a command usage.

install.sh

@@ -5,10 +5,6 @@ main() {
         echo 'Error: git is not installed.'
         exit 1
     fi
-    if ! [ -x "$(command -v pip)" ]; then
-        echo 'Error: pip is not installed.'
-        exit 1
-    fi
     if [ -f ~/.tldrrc ]; then
         echo "found ~/.tldrrc, skip install process"
         exit 1
@@ -21,14 +17,7 @@ main() {
     fi
 
     echo "clone tldr pages..."
-    git clone [email protected]:tldr-pages/tldr.git "$tldr_pages_path"
-
-    echo "install tldr.py..."
-    if [[ `which python | grep -o '/usr'` == "/usr" ]]; then
-        sudo pip install -U tldr.py
-    else
-        pip install -U tldr.py
-    fi
+    git clone https://github.com/tldr-pages/tldr.git "$tldr_pages_path"
 
     echo "init tldr.py..."
     platform="unknown"