Improve installation instructions

README.md

@@ -12,7 +12,7 @@ Best supported on Ubuntu 14.04 with default `gdb` or `gdb-multiarch` (e.g. with
 ## Installation
 
 1. Clone the repo: `git clone https://github.com/zachriggle/pwndbg`
-2. Add to `~/.gdbinit`: `source ~/pwndbg/gdbinit.py`
+2. Add to `~/.gdbinit`: `cd pwndbg && echo "source $PWD/gdbinit.py" >> ~/.gdbinit`
 
 ### Prerequisites
 
@@ -21,8 +21,8 @@ Best supported on Ubuntu 14.04 with default `gdb` or `gdb-multiarch` (e.g. with
 Currently this is only available via a source build.
 
 1. Clone the repo: `git clone https://github.com/aquynh/capstone`
-2. Select the `next` branch: `git checkout -t origin/next`
+2. Select the `next` branch: `cd capstone && git checkout -t origin/next`
-3. Build and install libcapstone: `sudo make.sh install`
+3. Build and install libcapstone: `sudo ./make.sh install`
 4. Build and install Python bindings: `cd bindings/python && python setup.py install`
 
 #### pycparser