Minor changes

README.md

@@ -10,7 +10,13 @@ ptSpar is a C++ program implementing a Neighborhood-Preserving Graph Sparsificat
 
 ## Compilation
 1. **Install Boost Library:** Ensure the Boost Program Options library is installed on your system.
-2. **Compilation Command:** In the source directory, compile using `g++ -std=c++11 main.cpp -o ptSpar -lboost_program_options`.
+2. **Compilation Command:** Create a build directory and cd into it, and execute the following commands:
+   ```bash
+    cmake ..
+   ``` 
+   ```bash
+    make 
+     ```
 
 ## Usage
 - **Basic Command Structure:** 
@@ -27,5 +33,5 @@ ptSpar is a C++ program implementing a Neighborhood-Preserving Graph Sparsificat
 
 ## Example
 ```bash
-./ptSpar --input myGraph.txt --output_file compressedGraph.txt --directed true --algorithm Random --depth 2 --proportions 0.5 0.5
+./ptSpar --input myGraph.txt --output_file compressedGraph.txt --directed true --algorithm Random --depth 2 --proportions 0 0.5 0.5
 ```