fix some readme errors

README.md

@@ -31,7 +31,7 @@ make                                  // Rerun this every time you change source
 I can't provide information for all distributions, but in general it should be like the following:
 
 Linux systems:
-- `boost` should be available as a system package via your package manager.
+- `boost` and `cmake`: should be available as a system package via your package manager.
 - `readline` should be installed already, otherwise try your package manager as well.
 - `cpr` is a bit more complicated:
     - On Arch, there is a package in the [AUR](https://aur.archlinux.org/packages/cpr).
@@ -41,23 +41,23 @@ Linux systems:
 
 Mac OS:
 - I recommend installing packages with [Homebrew](https://brew.sh).
-- So `brew install boost cpr readline` should do the job.
+- So `brew install boost cpr readline cmake` should do the job.
 
 Windows:
 - Currently, I have no idea regarding windows, sorry for that.
 
 ### Installing cpr as a local CMAKE dependency
 - There is also the option to install `cpr` directly as a dependency through `CMake`.
-    For this, replace the line
+    For this, in `CMakeLists.txt`, replace the line
     ```
     find_package(cpr)
     ```
     with the lines
     ```
-include(FetchContent)
-FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/libcpr/cpr.git
-                         GIT_TAG 2553fc41450301cd09a9271c8d2c3e0cf3546b73)
-FetchContent_MakeAvailable(cpr)
+    include(FetchContent)
+    FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/libcpr/cpr.git
+                             GIT_TAG 2553fc41450301cd09a9271c8d2c3e0cf3546b73)
+    FetchContent_MakeAvailable(cpr)
     ```
     where you replace the git tag with the latest release tag from [Github](https://github.com/libcpr/cpr/releases).
     You can find details on this installation method on the [cpr github page](https://github.com/lipcpr/cpr) as well.