Minor change.

Change-Id: Idf9d19d7257cc69331155fab30b9f565a8a52931

Author: Diptorup Deb

README.rst

@@ -6,7 +6,7 @@ Numba
    :target: https://gitter.im/numba/numba?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge
    :alt: Gitter
 
-A Just-In-Time Compiler for Numerical Functions in Python
+A Just-In-Time(JIT) Compiler for Numerical Functions in Python
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 Numba is an open source, NumPy-aware optimizing compiler for Python sponsored