updated manual: removed note on requiring GSL

Author: terencewtli

docs/manual.pdf

@@ -89,9 +89,9 @@ \section{Installation}
 \paragraph{System Requirements}
 \label{sub:require}
 ~\\~\\[-.2cm]
-\textbf{preseq} runs on Unix-type system with GNU Scientific Library
-(GSL), available at ~\url{http://www.gnu.org/software/gsl/}.  If the
-input file is in BAM format, the HTSLib API is required but is
+\textbf{preseq} runs on Unix-type systems. If the
+input file is in BAM format, the HTSLib API is required 
+(http://www.htslib.org/download/) but is
 included in all binaries and source code.  If the input is a text file
 of counts in a single column or is in BED format, SAMTools is not
 required.  It has been tested on Linux and Mac OS-X.