Added documentation for to_clipboard()

Author: nipunbatra

doc/source/io.rst

@@ -1231,6 +1231,37 @@ And then import the data directly to a DataFrame by calling:
 
    clipdf
 
+.. note::
+
+   You may need to install xsel on Linux to be able to read from the clipboard.
+
+The ``to_clipboard`` method can be used to write the contents of a DataFrame to 
+the clipboard. Following which you can paste the clipboard contents into other 
+applications (CTRL-V on many operating systems). Here we illustrate writing a
+DataFrame into clipboard and reading it back.
+
+.. ipython:: python
+    
+    df=pd.DataFrame(randn(5,3))
+
+.. ipython:: python
+
+    df
+
+.. ipython:: python
+
+    df.to_clipboard()  
+
+.. ipython:: python
+
+    obj=pd.read_clipboard()  
+    
+.. ipython:: python
+
+    obj
+
+
+
 
 .. _io.excel: