modified README about the dependencies

README.md

@@ -5,7 +5,7 @@ A simple implementation of Hartree Fock Method (just for my learning!).
 
 The implementation is based on the "Modern Quantum Chemistry" by Szabo and Ostland"
 
-Since the molecular integrals are evaluated by the methods of Taketa, Huzinaga and Oohata, this program could calculated not only the S orbitals, but also, P and D orbitals. 
+Since the molecular integrals are evaluated by the methods of Taketa, Huzinaga and Oohata, this program could calculate not only the S orbitals, but also P and D orbitals (but TOO SLOW!). 
 
 Build and Run
 ------------
@@ -14,9 +14,9 @@ Build and Run
 
 - cmake (build system)
 - boost (boost unit_test_framework is used for the test)
+- gsl   (for special function)
 - Eigen (temlate library for the linear algebra)
 
-
 ### Linux
 
 Before running the CMake, expand the Eigen template library into the same directory.
@@ -50,4 +50,4 @@ References
 
 * Molecular Integral
 
-	Taketa, Hiroshi, Sigeru Huzinaga, and Kiyosi O-ohata. "Gaussian-Expansion Methods for Molecular Integrals." Journal of the Physical Society of Japan 21.11 (1966): 2313-2324.
+	Taketa, Hiroshi, Sigeru Huzinaga, and Kiyosi O-ohata. "Gaussian-Expansion Methods for Molecular Integrals." Journal of the Physical Society of Japan 21.11 (1966): 2313-2324.