created pull request template to close #113

**Related Issue**

closes #113

**Database Changes/Migrations**

N/A

**Added/Altered API Routes***

N/A

**Test Modifications**
N/A

**Test Procedure**

1. Create a branch
2. Commit a change to that branch
3. Push branch
4. Create Pull Request and fill in PR template

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md

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+**Related Issue**
+
+Note which issue number this issue closes.
+
+*Example:*
+> closes #113
+
+**Database Changes/Migrations**
+
+If you added/modified a table, notify people of schema change here.
+
+*Example:*
+> Added table `account_semester_selection` for a mapping from a students account and semester to a class and section (aka class/section selections)
+
+**Added/Altered API Routes***
+
+List added/altered API Routes, example:
+
+*Example:*
+> Added: `GET /api/class/FALL-2020` - Fetch all classes from semester (Fall-2020)
+> 
+> Modified: `GET /api/class/FALL-2020?meet-prerequisites=true` - Added filtering on prerequistite through query string
+
+**Test Modifications**
+
+Note added unit/integration tests: (all backend changes should contain unit/integration tests with pytest).
+
+*Example:*
+> Added test `tests/api/db/test_classinfo.py:test_crn_uniqueness` to ensure all classes returned from API call don't have repeat CRNs
+
+**Test Procedure**
+
+Show procedure to test functionality with a clear procedure
+
+*Example:*
+> 1. Create a branch
+> 2. Commit a change to that branch
+> 3. Push branch
+> 4. Create Pull Request and fill in PR template