📚 Consistent formatting in README.md

README.md

 NVM-based Data Strucutres
 =========================
+
 [![pipeline status](https://dbgit.prakinf.tu-ilmenau.de/code/nvm-based_data_structures/badges/master/pipeline.svg)](https://dbgit.prakinf.tu-ilmenau.de/code/nvm-based_data_structures/commits/master)
 [![coverage report](https://dbgit.prakinf.tu-ilmenau.de/code/nvm-based_data_structures/badges/master/coverage.svg?job=coverage)](https://dbgit.prakinf.tu-ilmenau.de/code/nvm-based_data_structures/commits/master)
 
 This is a repository for persistent data structures based on non-volatile memory (NVM).
-## :sparkles: TODOs: ##
+
+:sparkles: TODOs
+----------------
+
 - [x] ~~PBPTree (B⁺-Tree for NVM)~~
 - [x] ~~PTable (BDCC + NVM)~~
 - [x] ~~Steffen's implementations~~
@@ -15,11 +19,15 @@ This is a repository for persistent data structures based on non-volatile memory
 - [ ] Data structure common benchmark
 - [ ] Documentation
 
-## :copyright: License ##
+:copyright: License
+-------------------
+
 The structures are licensed under GPLv3.
 Please see the file [COPYING](COPYING) for detailed license information.
 
-## :heavy_plus_sign: Requirements ##
+:heavy_plus_sign: Requirements
+------------------------------
+
 - C++ Compiler supporting C++17
 - PMDK >= 1.5
 
@@ -31,30 +39,37 @@ Please see the file [COPYING](COPYING) for detailed license information.
   > **NOTE**: When installing via package manager - libpmemobj++-dev(el) should install the dependencies above, too.
 - Emulated NVM device [pmem.io](http://pmem.io/2016/02/22/pm-emulation.html) (optional)
 
+:gear: Build
+------------
 
-## :gear: Build ##
 Configurations can be found in [src/CMakeLists.txt](src/CMakeLists.txt).
 
-```
+```bash
 mkdir build; cd build
 cmake ../src
 make -j
 ```
+
 Tests and benchmarks, if enabled, can be either manually executed from the ```build``` folder or run at once with:
 
-```
+```bash
 make test
 ```
-### :whale: Docker ###
+
+:whale: Docker
+--------------
+
 There is also the option to create a Docker container.
-For this you can either download a pre-built docker image: ```docker pull dbisilm/nvm-based_data_structures``` 
+For this you can either download a pre-built docker image: ```docker pull dbisilm/nvm-based_data_structures```
 or built it yourself (in project root directory) with: ```docker build .```
 
 After this you can start the container and bash login with e.g.:
-```
+
+```bash
 docker run --rm -i -t dbisilm/nvm-based_data_structures /bin/bash
 ```
 
+:books: Documentation
+---------------------
 
-## :books: Documentation ##
 :construction: