improve readme formatting

README.md

@@ -50,13 +50,13 @@ headers (e.g. libc6-dev) etc.
 
 Depending on where dependencies (like efl) are installed, you might have to
 set your `PKG_CONFIG_PATH` environment variable like:
-```
+```sh
 export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig
 ```
 
 Also note that some distributions like to add extra arch directories
 to your library locations so you might have to have more like:
-```
+```sh
 export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/local/lib64/pkgconfig:/usr/local/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig:/usr/lib/x86_64-linux-gnu/pkgconfig
 ```
 
@@ -68,67 +68,67 @@ ld.so.conf for your distribution.
 
 You might also want to add the destination bin dir to your environment
 variable PATH (see documentation on your shell PATH variable) such as:
-```
+```sh
 export PATH=/usr/local/bin:/usr/bin:/bin
 ```
 
 Normal compilation in /usr/local:
-```
+```sh
 meson . build
 ninja -C build
 sudo ninja -C build install
 ```
 
 For meson build generic options:
-```
+```sh
 meson --help
 ```
 
 For a list of project specific options supported:
-```
+```sh
 cat meson_options.txt
 ```
 
 To set 1 or more project specific options:
-```
+```sh
 meson --prefix=/path/to -Doption=value [-Dother=value2] [...] . build
 ```
 
 To display current configuration:
-```
+```sh
 meson configure build
 ```
 
 The above will only work after at least the following is done:
-```
+```sh
 meson . build
 ```
 
 ### Quick build help
 
 How clean out the build and config and start fresh:
-```
+```sh
 rm -rf build
 ```
 
 How to make a dist tarball and check its build:
 (must do it from git tree clone and commit all changes to git first)
-```
+```sh
 ninja -C build dist
 ```
 
 How to change prefix:
-```
+```sh
 meson --prefix=/path/to/prefix . build
 ```
 
 How to install in a specific destination directory for packaging:
-```
+```sh
 DESTDIR=/path/to/destdir ninja -C build install
 ```
 
 How to build with verbose output (full commands run):
-```
+```sh
 ninja -C build -v
 ```
 -----