Update README.md

README.md

@@ -13,7 +13,9 @@ The DSSP program was designed by Wolfgang Kabsch and Chris Sander to
 standardize secondary structure assignment. DSSP is a database of secondary
 standardize secondary structure assignment. DSSP is a database of secondary
 structure assignments (and much more) for all protein entries in the Protein
 structure assignments (and much more) for all protein entries in the Protein
 Data Bank (PDB). DSSP is also the program that calculates DSSP entries from
 Data Bank (PDB). DSSP is also the program that calculates DSSP entries from
-PDB entries. DSSP does not predict secondary structure.
+PDB entries.
+
+DSSP does not predict secondary structure.
 
 
 Requirements
 Requirements
 ------------
 ------------
@@ -25,14 +27,14 @@ of handling C++17 code.
 Building
 Building
 --------
 --------
 
 
-Make sure you install libcif++ first before building.
+Make sure you install [libcif++](https://github.com/PDB-REDO/libcifpp) first before building.
 
 
 After that, building should be as easy as typing:
 After that, building should be as easy as typing:
 
 
 ```
 ```
 ./configure
 ./configure
 make
 make
-make install
+sudo make install
 ```
 ```
 
 
 Usage
 Usage